fix(mobile): transparent system navbar when trash bottom bar is visible (#27093)

* disable bottom safe area on trash bottom bar so that it extends below the system nav bar

* remove manual padding calculations

* re-add static vertical padding to maintain previous bottom bar height

mobile/lib/presentation/widgets/bottom_sheet/trash_bottom_sheet.widget.dart

@@ -10,14 +10,14 @@ class TrashBottomBar extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    return SafeArea(
+    return Align(
-      child: Align(
       alignment: Alignment.bottomCenter,
-        child: SizedBox(
-          height: 64,
       child: Container(
         color: context.themeData.canvasColor,
-            child: const Row(
+        padding: const EdgeInsets.symmetric(vertical: 8),
+        child: const SafeArea(
+          top: false,
+          child: Row(
             mainAxisAlignment: MainAxisAlignment.spaceEvenly,
             children: [
               DeleteTrashActionButton(source: ActionSource.timeline),
@@ -26,7 +26,6 @@ class TrashBottomBar extends ConsumerWidget {
           ),
         ),
       ),
-      ),
     );
   }
 }