* Added toggle chat button to navigation header
* new `useBrowserWindow` hook to work with browser title and focus
* react2angular chat toggle button plumbing
GitOrigin-RevId: 4380f1db9c7cc9a25bfb8d7a33e18d61b1d32993
* Created ng-controller for react shared context and set editor.loading
* toolbar-header component with menu button (and story)
* Added editor-navigation-toolbar-root and react2angular plumbing
* Added eslint-disable exception to use <a/> instead of <button/>
* added 'menu' to extracted translation
* [ReactNavToolbar] Added cobranding and back to projects buttons (#3515)
GitOrigin-RevId: 27c3bba85cbc96a123d58c66a0bd5d6a2cfd8aca
