Description

This PR adds support for material state mouse cursor to InkWell and InkResponse, and set their default cursors to be MaterialStateMouseCursor.clickable.

During #57628, InkWell and InkResponse were considered a "basic" widget and has a mouse cursor that defaults to defer. This has been found inconvenient when I'm adding cursor support to Flutter Gallery in that I had to add the same line mouseCursor: SystemMouseCursors.click to every occurrence of InkWell. This made me realize it's probably better to let it default to click - or better, clickable.

Related Issues

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Tests

I added the following tests:

• Changed inkwell's tests to include disabled states

Checklist

Before you create this PR confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]). This will ensure a smooth and quick review process.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the CLA.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I updated/added relevant documentation (doc comments with ///).
• All existing and new tests are passing.
• The analyzer (flutter analyze --flutter-repo) does not report any problems on my PR.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

Did any tests fail when you ran them? Please read Handling breaking changes.

• Some tests written in Add mouse cursor API to widgets (phase 1) #57628 has to be changed. But since that PR was merged recently, and no uses have been observed in flutter/tests or g3, it shouldn't be counted as breaking.