fixed failing test

test/widget/prosemirror/pm_table_view_test.dart

@@ -81,7 +81,22 @@ void main() {
   testWidgets('tapping a toolbar button switches the shared mode', (
     tester,
   ) async {
-    await tester.pumpWidget(_host(_tableDoc()));
+    // The mode toolbar only renders once the table overflows its width — at the
+    // full test surface the fixture table fits and the toggle stays hidden. Pin
+    // a narrow width so it overflows, then let the post-frame overflow
+    // measurement settle so the toolbar is present before tapping.
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SingleChildScrollView(
+            child: Center(
+              child: SizedBox(width: 200, child: PmDocumentView(doc: _tableDoc())),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
     expect(pmTableMode.value, PmTableMode.scroll);
 
     await tester.tap(find.byTooltip('Spalten umbrechen').first);