Added scrollController property to TextFormField (#75169)

packages/flutter/lib/src/material/text_form_field.dart

@@ -193,6 +193,7 @@ class TextFormField extends FormField<String> {
     ScrollPhysics? scrollPhysics,
     Iterable<String>? autofillHints,
     AutovalidateMode? autovalidateMode,
+    ScrollController? scrollController,
   }) : assert(initialValue == null || controller == null),
        assert(textAlign != null),
        assert(autofocus != null),
@@ -291,6 +292,7 @@ class TextFormField extends FormField<String> {
            selectionControls: selectionControls,
            buildCounter: buildCounter,
            autofillHints: autofillHints,
+           scrollController: scrollController,
          );
        },
      );

packages/flutter/test/material/text_form_field_test.dart

@@ -727,4 +727,26 @@ void main() {
     final TextDirection textDirection = Directionality.of(context);
     expect(textDirection, TextDirection.rtl);
   });
+
+  testWidgets('Passes scrollController to underlying TextField', (WidgetTester tester) async {
+    final ScrollController scrollController = ScrollController();
+
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextFormField(
+              scrollController: scrollController,
+            ),
+          ),
+        ),
+      ),
+    );
+
+    final Finder textFieldFinder = find.byType(TextField);
+    expect(textFieldFinder, findsOneWidget);
+
+    final TextField textFieldWidget = tester.widget(textFieldFinder);
+    expect(textFieldWidget.scrollController, scrollController);
+  });
 }