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/screens/usb_screen.dart

@@ -203,10 +203,7 @@ class _UsbScreenState extends State<UsbScreen> {
               statusText,
               maxLines: 1,
               overflow: TextOverflow.ellipsis,
-              style: TextStyle(
-                color: statusColor,
-                fontWeight: FontWeight.w500,
-              ),
+              style: TextStyle(color: statusColor, fontWeight: FontWeight.w500),
             ),
           ),
         ],
@@ -222,11 +219,18 @@ class _UsbScreenState extends State<UsbScreen> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(Icons.usb, size: 64, color: Theme.of(context).colorScheme.onSurfaceVariant),
+            Icon(
+              Icons.usb,
+              size: 64,
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
             const SizedBox(height: 16),
             Text(
               l10n.usbStatus_searching,
-              style: TextStyle(fontSize: 16, color: Theme.of(context).colorScheme.onSurfaceVariant),
+              style: TextStyle(
+                fontSize: 16,
+                color: Theme.of(context).colorScheme.onSurfaceVariant,
+              ),
             ),
           ],
         ),
@@ -238,12 +242,19 @@ class _UsbScreenState extends State<UsbScreen> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(Icons.usb, size: 64, color: Theme.of(context).colorScheme.onSurfaceVariant),
+            Icon(
+              Icons.usb,
+              size: 64,
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
             const SizedBox(height: 16),
             Text(
               l10n.usbScreenEmptyState,
               textAlign: TextAlign.center,
-              style: TextStyle(fontSize: 16, color: Theme.of(context).colorScheme.onSurfaceVariant),
+              style: TextStyle(
+                fontSize: 16,
+                color: Theme.of(context).colorScheme.onSurfaceVariant,
+              ),
             ),
           ],
         ),