Move ResizerNotifier into SDKContext (#30939)

* Move ResizerNotifier into SDKContext

so we don't have to pass it into RoomView

* Fix test

* Unused import

* Add tests

* Remove a bunch of resizeNotifier props

* Remove more resizeNotifier props

* Add resizenotifier to test

* Add more sdkcontext wrappers in tests

* More sdkcontext wrappers

* Even more sdkcontext wrappers

* Add test to make sonarcloud happy

* Context isn't always there unlike props

* Test actual resizing too

* Remove commented line

src/components/structures/UserView.tsx

@@ -87,12 +87,7 @@ export default class UserView extends React.Component<IProps, IState> {
                 />
             );
             return (
-                <MainSplit
-                    panel={panel}
-                    resizeNotifier={this.props.resizeNotifier}
-                    defaultSize={420}
-                    analyticsRoomType="user_profile"
-                >
+                <MainSplit panel={panel} defaultSize={420} analyticsRoomType="user_profile">
                     <HomePage />
                 </MainSplit>
             );