fix: mobile unawaited_futures lint (#21661)

* chore: add unawaited_futures lint as warning

# Conflicts:
#	mobile/analysis_options.yaml

* remove unused dcm lints

They will be added back later on a case by case basis

* fix warning

# Conflicts:
#	mobile/lib/presentation/pages/drift_remote_album.page.dart

* auto gen file

* review changes

* conflict resolution

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/pages/common/gallery_viewer.page.dart

@@ -95,7 +95,7 @@ class GalleryViewerPage extends HookConsumerWidget {
       } catch (e) {
         // swallow error silently
         log.severe('Error precaching next image: $e');
-        context.maybePop();
+        await context.maybePop();
       }
     }