feat: Update translations, fix scrolling on all pages

lib/features/documents/view/widgets/selection/document_selection_sliver_app_bar.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/src/widgets/framework.dart';
+import 'package:flutter/src/widgets/placeholder.dart';
+import 'package:paperless_api/paperless_api.dart';
+import 'package:paperless_mobile/features/documents/cubit/documents_cubit.dart';
+import 'package:paperless_mobile/features/documents/view/widgets/selection/bulk_delete_confirmation_dialog.dart';
+import 'package:paperless_mobile/generated/l10n/app_localizations.dart';
+import 'package:paperless_mobile/helpers/message_helpers.dart';
+import 'package:provider/provider.dart';
+
+class DocumentSelectionSliverAppBar extends StatelessWidget {
+  final DocumentsState state;
+  const DocumentSelectionSliverAppBar({super.key, required this.state});
+
+  @override
+  Widget build(BuildContext context) {
+    return SliverAppBar(
+      pinned: true,
+      title: Text(
+        S.of(context)!.countSelected(state.selection.length),
+      ),
+      leading: IconButton(
+        icon: const Icon(Icons.close),
+        onPressed: () => context.read<DocumentsCubit>().resetSelection(),
+      ),
+      actions: [
+        IconButton(
+          icon: const Icon(Icons.delete),
+          onPressed: () async {
+            final shouldDelete = await showDialog<bool>(
+                  context: context,
+                  builder: (context) =>
+                      BulkDeleteConfirmationDialog(state: state),
+                ) ??
+                false;
+            if (shouldDelete) {
+              try {
+                await context
+                    .read<DocumentsCubit>()
+                    .bulkDelete(state.selection);
+                showSnackBar(
+                  context,
+                  S.of(context)!.documentsSuccessfullyDeleted,
+                );
+                context.read<DocumentsCubit>().resetSelection();
+              } on PaperlessServerException catch (error, stackTrace) {
+                showErrorMessage(context, error, stackTrace);
+              }
+            }
+          },
+        ),
+      ],
+    );
+  }
+}