16085 Hold a mutex when updating all CanPostTaskToAllNativeThreads::Captures members. (cla: yes)

16086 Disable setting a library tag handler. (cla: yes)

16105 Fix Windows file checks of unicode paths (cla: yes, waiting for tree to go green)

16148 Revert breaking PRs (cla: yes)

16152 [web] Text width should never exceed constraint width (cla: yes, platform-web, waiting for tree to go green)

16153 Roll fuchsia/sdk/core/mac-amd64 from gNitp… to 5fMtM… (autoroller: commit, cla: yes)

16155 Reland “Engine/LibTxt/dart:ui impl of TextHeightBehavior #15087” (cla: yes)