* Allow DSS to be dragged when its children do not fill extent

* Fix when maxChildSize  < 1.0

This will fix our flutter build post-submit analyze test

Merge on red to fix flutter build

* Revert "Revert "Add buttons to gestures (#30339)" (#31801)"

This reverts commit 8fd7fa49.

* Synthesise kPrimaryButton for unknown devices

* Change TestPointer to a better API

This reverts commit 120a1fc4.

Updated the golden file

## Description

Make `_RenderCustomClip`'s `clipBehavior` non-final so we can update it during `updateRenderObject`. This will support `clipBehavior` changes in hot reload.

## Related Issues

Fixes #30863

## Tests

I added the following tests:

* ClipRect updates clipBehavior in updateRenderObject
* ClipRRect updates clipBehavior in updateRenderObject
* ClipOval updates clipBehavior in updateRenderObject
* ClipPath updates clipBehavior in updateRenderObject
* PhysicalModel updates clipBehavior in updateRenderObject
* PhysicalShape updates clipBehavior in updateRenderObject

59b91392e Roll src/third_party/skia a6d723f32f32..494aa3db9e78 (1 commits) (flutter/engine#8787) (#31847)


https://github.com/flutter/engine/compare/64b1d38081c2...59b91392e20a

git log 64b1d38081c2eadfc555da99bbdb3a1ec2c49a13..59b91392e20ac6b397bb4e257dc08333c54658c9 --no-merges --oneline
59b91392e Roll src/third_party/skia a6d723f32f32..494aa3db9e78 (1 commits) (flutter/engine#8787)

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64b1d3808 Roll src/third_party/skia 79e53712a05f..a6d723f32f32 (3 commits) (flutter/engine#8785) (#31830)


https://github.com/flutter/engine/compare/c0036315d4ca...64b1d38081c2

git log c0036315d4caed8db3ae2adb66aaedd6466fddf7..64b1d38081c2eadfc555da99bbdb3a1ec2c49a13 --no-merges --oneline
64b1d3808 Roll src/third_party/skia 79e53712a05f..a6d723f32f32 (3 commits) (flutter/engine#8785)

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Fixes a typo in the key generator readme.

Updated the examples in the readme to reflect that the examples were for physical key codes, where we're actually talking about logical key codes there.

https://github.com/flutter/engine/compare/1ecf924ff861...c0036315d4ca

git log 1ecf924ff86146c09ce834b295a2c4446122857c..c0036315d4caed8db3ae2adb66aaedd6466fddf7 --no-merges --oneline
c0036315d Roll src/third_party/skia bd425405f3aa..79e53712a05f (3 commits) (flutter/engine#8783)
5aa5b6cbf VirtualDisplay size constraint - add a comment explaining the reason (flutter/engine#8780)
ee3f04ac8 Roll src/third_party/skia 037884e5080b..bd425405f3aa (3 commits) (flutter/engine#8781)
ab01d7396 Roll src/third_party/skia d425dee662d1..037884e5080b (10 commits) (flutter/engine#8778)
a0bb23aad Fix header include guards for fml/thread_local.h (flutter/engine#8721)

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- Move `setState` to only be invoked when guarded by `widget._allowMultiplePanelsOpen`, fixing the case for `ExpansionPanelList`

- Remove setting `_currentOpenPanel` to `widget.initialOpenPanelValue` in `didUpdateWidget`, since this should only occur on `initState` and not every time the widget is updated. This fixes the problem for `ExpansionPanelList.radio`

- Added a `didUpdateWidget` condition for when `ExpansionPanelList` changes into `ExpansionPanelList.radio` to open the panel at `widget.initialOpenPanelValue`

- Added test cases for regression, expansionCallback cases, and `didUpdateWidget` transitions between `ExpansionPanelList` and `ExpansionPanelList.radio`

* Re-enable const

This reverts commit 727e7e82.

## Description

As we've introduced offset to the Opacity layer, we have to override
`applyTransform` to make Leader/FollowerLayer work correctly.

## Related Issues

Fixes https://github.com/flutter/flutter/issues/30587

Together with https://github.com/flutter/engine/pull/8585,
this test will also exercise test against
https://github.com/flutter/flutter/issues/30586.

## Tests

I added the following tests:
* text field selection toolbar renders correctly inside opacity

* Callbacks of tap, long press, drag, and double tap GR respond to only primary events.
* Add "secondary" callbacks to tap.
* Recognizers only compete on events if there are any related callbacks.
* Add "kSecondaryButton" constant.

https://github.com/flutter/engine/compare/48a5ce87aeb6...1ecf924ff861

git log 48a5ce87aeb66d3315104a465a1467a37d713f67..1ecf924ff86146c09ce834b295a2c4446122857c --no-merges --oneline
1ecf924ff Roll src/third_party/skia bc94e79eb7b6..d425dee662d1 (1 commits) (flutter/engine#8773)
ae724f132 colormatrix is now 0...1 (flutter/engine#8772)

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* Update TabController to support dynamic tabs.

* Added test for single Tab showing correct color.

It looks like the documentation for UiKitView has been copy-pasted from AndroidView or so.
This PR fixes the word 'Android' to 'iOS' for the `creationParams`.

48a5ce87a Roll src/third_party/skia d1be9450c7e2..bc94e79eb7b6 (3 commits) (flutter/engine#8771) (#31776)


https://github.com/flutter/engine/compare/c75e09c52983...48a5ce87aeb6

git log c75e09c5298374c7e70c728b2b4208ec8bcb3f8a..48a5ce87aeb66d3315104a465a1467a37d713f67 --no-merges --oneline
48a5ce87a Roll src/third_party/skia d1be9450c7e2..bc94e79eb7b6 (3 commits) (flutter/engine#8771)

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c75e09c52 Roll src/third_party/skia 7056ce14dd15..d1be9450c7e2 (1 commits) (flutter/engine#8770) (#31770)


https://github.com/flutter/engine/compare/98039f78a784...c75e09c52983

git log 98039f78a784f48a5940c188276956f0831df6c1..c75e09c5298374c7e70c728b2b4208ec8bcb3f8a --no-merges --oneline
c75e09c52 Roll src/third_party/skia 7056ce14dd15..d1be9450c7e2 (1 commits) (flutter/engine#8770)

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https://github.com/flutter/engine/compare/3b1bebf2898b...98039f78a784

git log 3b1bebf2898b8ed8767eac53f189d237ba71f12f..98039f78a784f48a5940c188276956f0831df6c1 --no-merges --oneline
98039f78a Roll src/third_party/skia a5dc0f2d7a59..7056ce14dd15 (1 commits) (flutter/engine#8769)
8aa51ef92 Roll src/third_party/skia 4732dd31588b..a5dc0f2d7a59 (1 commits) (flutter/engine#8768)
2c5d35827 Roll src/third_party/skia d7082a5805c8..4732dd31588b (1 commits) (flutter/engine#8767)

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https://github.com/flutter/engine/compare/7f753f8f528a...3b1bebf2898b

git log 7f753f8f528a1c92cc4f23957694623ad45104eb..3b1bebf2898b8ed8767eac53f189d237ba71f12f --no-merges --oneline
3b1bebf28 Roll src/third_party/skia e178c0586cd6..d7082a5805c8 (1 commits) (flutter/engine#8766)
5846027dc Roll src/third_party/skia 3349fb0195ff..e178c0586cd6 (1 commits) (flutter/engine#8763)
3493dcfba Rename tightWidth to longestLine (flutter/engine#8706)

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Added note that onChange callback will not be invoked if the radio is already selected