fix warning

mobile/lib/widgets/asset_viewer/bottom_gallery_bar.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:auto_route/auto_route.dart';
@@ -81,7 +82,7 @@ class BottomGalleryBar extends ConsumerWidget {
           // to not throw the error when the next preCache index is called
           if (totalAssets.value == 1 || assetIndex.value == totalAssets.value - 1) {
             // Handle only one asset
-            context.maybePop();
+            await context.maybePop();
           }
 
           totalAssets.value -= 1;
@@ -106,18 +107,20 @@ class BottomGalleryBar extends ConsumerWidget {
       }
 
       // Asset is permanently removed
-      showDialog(
-        context: context,
-        builder: (BuildContext _) {
-          return DeleteDialog(
-            onDelete: () async {
-              final isDeleted = await onDelete(true);
-              if (isDeleted) {
-                removeAssetFromStack();
-              }
-            },
-          );
-        },
+      unawaited(
+        showDialog(
+          context: context,
+          builder: (BuildContext _) {
+            return DeleteDialog(
+              onDelete: () async {
+                final isDeleted = await onDelete(true);
+                if (isDeleted) {
+                  removeAssetFromStack();
+                }
+              },
+            );
+          },
+        ),
       );
     }
 
@@ -145,7 +148,7 @@ class BottomGalleryBar extends ConsumerWidget {
                     onTap: () async {
                       await unStack();
                       ctx.pop();
-                      context.maybePop();
+                      await context.maybePop();
                     },
                     title: const Text("viewer_unstack", style: TextStyle(fontWeight: FontWeight.bold)).tr(),
                   ),
@@ -173,9 +176,11 @@ class BottomGalleryBar extends ConsumerWidget {
     void handleEdit() async {
       final image = Image(image: ImmichImage.imageProvider(asset: asset));
 
-      context.navigator.push(
-        MaterialPageRoute(
-          builder: (context) => EditImagePage(asset: asset, image: image, isEdited: false),
+      unawaited(
+        context.navigator.push(
+          MaterialPageRoute(
+            builder: (context) => EditImagePage(asset: asset, image: image, isEdited: false),
+          ),
         ),
       );
     }