29231 Replace FragmentShader with FragmentShaderBuilder (cla: yes, waiting for tree to go green, platform-web)

29246 [web] Fix keyboard popping up unexpectedly on iOS (cla: yes, platform-web)

29280 Fix typos (platform-ios, platform-android, cla: yes, waiting for tree to go green, platform-web, platform-macos, platform-linux, platform-fuchsia, needs tests)

29323 ensure web_ui and ui have the same toString methods for StringAttributes (cla: yes, waiting for tree to go green, platform-web)

29326 Update documentation links to point to main branch. (platform-android, cla: yes, waiting for tree to go green, platform-web, platform-windows, needs tests)

29389 Migrate golds script to use main branch. (cla: yes, waiting for tree to go green, platform-web, needs tests)