feat(native): Last mobile release UI fixes (#12603)
* feat(base/modal): order props alphabetically
* feat(base/ui): added ripple color for tertiary button
* feat(prejoin): removed autoFocus from input and adjusted content
* feat(conference): adjusted RaisedHandCountLabel and added extra code spaces
* feat(prejoin): fixed content to fit tablets
* feat(conference): moved header button styles to navigation styles
* feat(mobile/navigation): updated header navigation button styles
* feat(prejoin): updated elements width, removed left inset
fix(mobile/navigations) added LoadConfigOverlay to RootNavigator (#11067)
Converted LoadConfigOverlay to a JitsiScreen component that right now is part of navigation as ConnectingPage, plus I
separated appNative and other actions into web and native.