fix(mobile): convert video controls from hook to stateful widget (#27514)

We are generally looking to move away from hooks as they are hard to
reason about and have weird bugs. In particular, the timer did not
properly capture the ref of the callback, and so it would execute on old
state. A standard stateful widget does not have this problem, and is
easier to organise.

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/presentation/widgets/asset_viewer/bottom_bar.widget.dart

@@ -74,7 +74,7 @@ class ViewerBottomBar extends ConsumerWidget {
                   child: Column(
                     mainAxisSize: MainAxisSize.min,
                     children: [
-                      if (asset.isVideo) VideoControls(key: ValueKey(asset.heroTag), videoPlayerName: asset.heroTag),
+                      if (asset.isVideo) VideoControls(videoPlayerName: asset.heroTag),
                       if (!isReadonlyModeEnabled)
                         Row(mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: actions),
                     ],