Release Notes for v39.5.2

Fixes

Fixed a crash that could occur when using the File System Access API. #49634 ^{(Also in 40, 41)}
Fixed an issue where alt+space triggered th system context menu even if an accelerator was registered for the hotkey combination. #49641 ^{(Also in 40, 41)}
Fixed an issue where role-based menu items were incorrectly returning null for their accelerator property. #49670 ^{(Also in 40, 41)}
Fixed application input broken on certain wayland compositors when DND action was cancelled. #49694
Fixed dock menu items not respecting enabled and checked properties on macOS. #49626 ^{(Also in 38, 40, 41)}

Refactored our MSIX updater code to use an upstream Chromium pattern and eliminates the need for special exception handling build flags. #49688 ^{(Also in 40, 41)}

Fixed squirrel.mac stacked update behavior to old staged updates. #49637 ^{(Also in 40, 41)}