feat(mobile): use material design 3 slider (#26829)

* feat(mobile): use material design 3 slider

The new slider is easier to use, and looks more modern.

* chore: add shadow to button and text for better visibility

---------

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

mobile/lib/theme/theme_data.dart

@@ -62,8 +62,6 @@ ThemeData getThemeData({required ColorScheme colorScheme, required Locale locale
     ),
     chipTheme: const ChipThemeData(side: BorderSide.none),
     sliderTheme: const SliderThemeData(
-      thumbShape: RoundSliderThumbShape(enabledThumbRadius: 7),
-      trackHeight: 2.0,
       // ignore: deprecated_member_use
       year2023: false,
     ),

mobile/lib/widgets/asset_viewer/video_controls.dart

@@ -14,6 +14,8 @@ import 'package:immich_mobile/widgets/asset_viewer/animated_play_pause.dart';
 class VideoControls extends HookConsumerWidget {
   final String videoPlayerName;
 
+  static const List<Shadow> _controlShadows = [Shadow(color: Colors.black87, blurRadius: 6, offset: Offset(0, 1))];
+
   const VideoControls({super.key, required this.videoPlayerName});
 
   void _toggle(WidgetRef ref, bool isCasting) {
@@ -70,7 +72,9 @@ class VideoControls extends HookConsumerWidget {
         children: [
           Row(
             children: [
-              IconButton(
+              IconTheme(
+                data: const IconThemeData(shadows: _controlShadows),
+                child: IconButton(
                   iconSize: 32,
                   padding: const EdgeInsets.all(12),
                   constraints: const BoxConstraints(),
@@ -79,6 +83,7 @@ class VideoControls extends HookConsumerWidget {
                       : AnimatedPlayPause(color: Colors.white, size: 32, playing: isPlaying),
                   onPressed: () => _toggle(ref, isCasting),
                 ),
+              ),
               const Spacer(),
               Text(
                 "${position.format()} / ${duration.format()}",
@@ -86,6 +91,7 @@ class VideoControls extends HookConsumerWidget {
                   color: Colors.white,
                   fontWeight: FontWeight.w500,
                   fontFeatures: [FontFeature.tabularFigures()],
+                  shadows: _controlShadows,
                 ),
               ),
               const SizedBox(width: 16),