Release Notes for v43.7.4

Fixes

• Fixed a crash when calling setIgnoreMenuShortcuts() on DevTools. #54117 ^{(Also in 44, 45)}
• Fixed a spurious "sandboxed_renderer.bundle.js script failed to run" console error when DevTools attached to a sandboxed frame before its first navigation. #54176 ^{(Also in 42)}
• Fixed an "Invalid guestInstanceId" error when removing a loaded <webview> from the DOM. #54097 ^{(Also in 42, 44, 45)}
• Fixed ready-to-show never firing for some hidden windows on Windows and Linux. #54119 ^{(Also in 44, 45)}