This reverts commit 988959da.

This reverts commit 94ff5202.

This does a cleanup of the examples, removing all of the "section" markers and extra comments that we don't need anymore now that the samples are no longer in the source code. It also removes the --template arguments from the {@tool dartpad} and {@tool sample} directives, since those are no longer used. It converts two examples that I discovered were still embedded into linked examples in the examples folder.

I didn't delete the templates from the snippets config folder yet, because there are still embedded samples in the dart:ui package from the engine that use them. Once dart:ui no longer uses the templates, they can be removed.

I bumped the version of the snippets package to pick up a change that allows removal of the --template argument.

[CheckboxListTile, SwitchListTile, RadioListTile] Adds visualDensity, focusNode and enableFeedback (#89353)

This PR adds visualDensity, focusNode and enableFeedback to:

- CheckboxListTile
- SwitchListTile
- RadioListTile

This extracts the sample code out from the API doc comments, and places them in separate files on disk, allowing running of the examples locally, testing them, and building of slightly larger examples.

Update samples to use repo analysis options, Fix sample templates and a ton of analyzer issues (#77868)

This reverts commit f8cd24de in an attempt to re-land it.

There are no changes in this PR from #74373, since it only failed Google internal tests, and we think that the solution involves updating those tests instead of changing this code.

This reverts commit 422916d2 because it causes unexpected changes in the rendering of the background of a ListTile.

This PR replaces the ColoredBox that ListTile uses with an Ink widget. That Ink widget is given a ShapeDecoration with the ListTile's color and shape. This fixes issues where the ListTile color would obscure material ripple effects, and cause the specified shape to not be respected.

Fix for issue #75518 - ListTile.divideTiles throws error if empty list is passed when null-safety enabled (#75522)

This reverts commit 024c49da because it breaks Google internal tests.

This PR replaces the ColoredBox that ListTile uses with an Ink widget. That Ink widget is given a ShapeDecoration with the ListTile's color and shape. This fixes issues where the ListTile color would obscure material ripple effects, and cause the specified shape to not be respected.

List which issues are fixed by this PR. You must list at least one issue.

Fixes #73616
Fixes #63877
Fixes #67117

If you had to change anything in the flutter/tests repo, include a link to the migration guide as per the breaking change policy.

I modified a handful of tests related to ListTiles. The tests I changed had implementation-specific ways of checking the ListTile color. I have rewritten those so that instead of checking for a ColoredBox with a specific color, they check that a path is painted with the correct color.

I added the following tests to list_tile_test.dart:

"ListTile shows Material ripple effects on top of tileColor" (Regression test for #73616)
"ListTile shape is painted correctly" (Regression test for #63877)
I added the following test to sliver_prototype_item_extent_test.dart:

"SliverPrototypeExtentList prototypeItem paint transform is zero" (Regression test for #67117)

Allow modification of ListTile's horizontalTitleGap, minVerticalPadding, minLeadingWidth