Harlen Batagelo 02f3ddf989
Update the mouse cursor handler to work with multi-view on Windows (#163855)
Partially fixes https://github.com/flutter/flutter/issues/142845.

This PR removes implicit view assumptions from the
`'flutter/mousecursor'` channel handler on Windows.

The cursor is now set for all existing views, ensuring that the current
`FlutterWindow` with the cursor in its client area uses the correct
cursor. The method arguments remain unchanged.

Cursor handler tests have also been updated to avoid assuming an
implicit view.

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we expect every widget to implement].
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- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
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Fixes] where supported.
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2025-03-13 22:10:02 +00:00
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