What's Changed

• tests: Fix avm2/mouse_wheel_events & avm2/edittext_line_methods by @kjarosh in #21425
• core: Make code more readable for PixelRegion (nit) by @Flawake in #21433
• avm1: Resolve _root from display object's root by @jarca0123 in #21337
• chore: Mark avm2/stage3d_errors_atf test as flaky by @kjarosh in #21427
• ci: Add test coverage by @kjarosh in #21342
• chore: Fix clippy warnings by @kjarosh in #21438

Full Changelog: nightly-2025-08-21...nightly-2025-08-22