* Revert "Revert "Fix text.rich to merge widget span (#113461)" (#121562)"

This reverts commit c8d80163.

* Fixes tag to not pollute cached semantics configuration in rendering object

Roll Flutter Engine from 8e2eab59ce38 to 37ff1ca124a3 (2 revisions)

Roll Packages from f39c97dbfb95 to 09544999b221 (8 revisions)

Fix text history undo/redo should not add a new entry to the history

Roll Flutter Engine from 46ee3209b943 to 8e2eab59ce38 (6 revisions)

Delete flutter_plugins.version

Roll Flutter Engine from 9ffe548bd842 to 46ee3209b943 (2 revisions)

Bump github/codeql-action from 2.1.39 to 2.2.5

Marks Windows plugin_test to be unflaky

Update recipes doc with correct parameters

[flutter_tool] advertise the default value for --dart2js-optimization

implement override of toString() in order to print useful message in release mode as well as debug mode (#118263)

Added `_ErrorDescription.toString()`

Roll Flutter Engine from 43f28d2ff87b to 9ffe548bd842 (1 revision)

Remove @param onDone

Add  typically used parameter name to the builder used in layout_builder

Roll Flutter Engine from 584144dd4108 to 43f28d2ff87b (2 revisions)

Fix how tests count open SemanticsHandles

Fix documentation error in README of `integration_test`

Roll Flutter Engine from d274195202d3 to 584144dd4108 (4 revisions)

Roll pub packages

Roll Flutter Engine from c6b532240498 to d274195202d3 (3 revisions)

This reverts commit fd65fd1b.

Fix monodrag gestures for #112403 and b/249091367

Use AnimatedSwitcher's _childNumber as Key in layoutBuilder's Stack

Roll pub packages

Make ClampingScrollSimulation ballistic and more like Android

This reverts commit 275ab9c6.

Roll Packages from ad48ee552768 to f39c97dbfb95 (8 revisions)

Roll Flutter Engine from b78ac0412904 to c6b532240498 (2 revisions)

Update date picker examples, remove unused variables and add missing tests

Migrate activation issue template to Github form issues

Roll Flutter Engine from 365f348645b6 to b78ac0412904 (2 revisions)

Roll Flutter Engine from 002b3d7a2419 to 365f348645b6 (2 revisions)

002b3d7a2 Roll Skia from 40d29bfd33c3 to 7a03a0e52abb (8 revisions) (flutter/engine#39929) (#121582)

Roll Flutter Engine from 2211a315d746 to 002b3d7a2419 (1 revision)

Roll Flutter Engine from ab034478aeab to 2211a315d746 (9 revisions)

Roll pub packages

showOnScreen does not crash if target node doesn't exist anymore

Removed "typically non-null" API doc qualifiers from ScrollMetrics min,max extent getters

fixes Show Week Day in CupertinoDatePicker with CupertinoDatePickerMo…

Fix AppBar scrolled under for 2D scrolling