Refactor UI code for better readability and consistency

- Improved formatting of ListTile icons and text styles in settings_screen.dart, telemetry_screen.dart, usb_screen.dart, gif_picker.dart, path_editor_sheet.dart, repeater_login_dialog.dart, and room_login_dialog.dart for better readability.
- Consolidated TextStyle definitions into single lines where applicable.
- Updated notification_service.dart to enhance readability of notification ID assignment.
- Simplified function signatures in routing_sheet.dart for clarity.
- Cleaned up test assertions in usb_flow_test.dart for conciseness.
- Removed unused translations in untranslated.json to streamline localization files.

lib/widgets/gif_picker.dart

@@ -180,7 +180,10 @@ class _GifPickerState extends State<GifPicker> {
           const SizedBox(height: 8),
           Text(
             context.l10n.gifPicker_poweredBy,
-            style: TextStyle(fontSize: 11, color: Theme.of(context).colorScheme.onSurfaceVariant),
+            style: TextStyle(
+              fontSize: 11,
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
           ),
         ],
       ),
@@ -197,11 +200,18 @@ class _GifPickerState extends State<GifPicker> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(Icons.error_outline, size: 64, color: Theme.of(context).colorScheme.onSurfaceVariant),
+            Icon(
+              Icons.error_outline,
+              size: 64,
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
             const SizedBox(height: 16),
             Text(
               _error!,
-              style: TextStyle(fontSize: 16, color: Theme.of(context).colorScheme.onSurfaceVariant),
+              style: TextStyle(
+                fontSize: 16,
+                color: Theme.of(context).colorScheme.onSurfaceVariant,
+              ),
             ),
             const SizedBox(height: 16),
             ElevatedButton.icon(
@@ -219,11 +229,18 @@ class _GifPickerState extends State<GifPicker> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(Icons.search_off, size: 64, color: Theme.of(context).colorScheme.onSurfaceVariant),
+            Icon(
+              Icons.search_off,
+              size: 64,
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
             const SizedBox(height: 16),
             Text(
               context.l10n.gifPicker_noGifsFound,
-              style: TextStyle(fontSize: 16, color: Theme.of(context).colorScheme.onSurfaceVariant),
+              style: TextStyle(
+                fontSize: 16,
+                color: Theme.of(context).colorScheme.onSurfaceVariant,
+              ),
             ),
           ],
         ),