flutter/flutter@c0a1129...8bdce07

2026-06-11 [email protected] Make shape border lerp symmetric (flutter/flutter#187282)
2026-06-11 [email protected] Sized to content for regular and dialog windows on win32 (flutter/flutter#186829)
2026-06-11 [email protected] Ensure that directory names are typed as strings in the CIPD package YAML file generated by merge_and_upload_debug_symbols.py (flutter/flutter#187813)
2026-06-11 [email protected] Add core-packages to ecosystem triage (flutter/flutter#187796)
2026-06-11 [email protected] Roll Fuchsia Linux SDK from 8azSyvz57mKcPqTwk... to 2KosSR4ONUjIB7tP_... (flutter/flutter#187842)
2026-06-11 [email protected] Document moveStep direction on WidgetController.dragUntilVisible (flutter/flutter#186943)
2026-06-11 [email protected] Add more 0x0 size tests part 11 (flutter/flutter#186822)
2026-06-10 [email protected] Fix ShapeDecoration.lerp crash when interpolating between gradient and color (flutter/flutter#187368)
2026-06-10 [email protected] Reland "Add support for stylus buttons" (flutter/flutter#187629)
2026-06-10 [email protected] Api docs: typo fix in Navigator (flutter/flutter#187572)
2026-06-10 [email protected] Roll Packages from bd297cf to 1b56cde (4 revisions) (flutter/flutter#187784)
2026-06-10 [email protected] Improve docs on MediaQuery: highContrast, invertColors and disableAnimations (flutter/flutter#186614)
2026-06-10 [email protected] [Android] Test to verify AnnounceSemanticsEvent deprecation warning on API 36 (flutter/flutter#187754)

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build-in -> built-in

## Pre-launch Checklist

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- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
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- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
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