Add autocorrect and enableSuggestions to SearchDelegate (#154932)

Add `autocorrect` and `enableSuggestions` to `SearchDelegate`, so that autocompletion can be disabled in search. 

*List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.*

* https://github.com/flutter/flutter/issues/98241

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

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

@@ -155,6 +155,8 @@ abstract class SearchDelegate<T> {
     this.searchFieldDecorationTheme,
     this.keyboardType,
     this.textInputAction = TextInputAction.search,
+    this.autocorrect = true,
+    this.enableSuggestions = true,
   }) : assert(searchFieldStyle == null || searchFieldDecorationTheme == null);
 
   /// Suggestions shown in the body of the search page while the user types a
@@ -365,6 +367,12 @@ abstract class SearchDelegate<T> {
   /// Defaults to the default value specified in [TextField].
   final TextInputType? keyboardType;
 
+  /// {@macro flutter.widgets.editableText.autocorrect}
+  final bool autocorrect;
+
+  /// {@macro flutter.services.TextInputConfiguration.enableSuggestions}
+  final bool enableSuggestions;
+
   /// The text input action configuring the soft keyboard to a particular action
   /// button.
   ///
@@ -619,6 +627,8 @@ class _SearchPageState<T> extends State<_SearchPage<T>> {
               focusNode: focusNode,
               style: widget.delegate.searchFieldStyle ?? theme.textTheme.titleLarge,
               textInputAction: widget.delegate.textInputAction,
+              autocorrect: widget.delegate.autocorrect,
+              enableSuggestions: widget.delegate.enableSuggestions,
               keyboardType: widget.delegate.keyboardType,
               onSubmitted: (String _) => widget.delegate.showResults(context),
               decoration: InputDecoration(hintText: searchFieldLabel),

packages/flutter/test/material/search_test.dart

@@ -579,10 +579,50 @@ void main() {
     expect(hintText.style?.fontSize, delegate.searchFieldStyle?.fontSize);
     expect(textField.style?.color, delegate.searchFieldStyle?.color);
     expect(textField.style?.fontSize, delegate.searchFieldStyle?.fontSize);
-
   });
 
-  testWidgets('keyboard show search button by default', (WidgetTester tester) async {
+  testWidgets('Default autocorrect and enableSuggestions value', (WidgetTester tester) async {
+    final _TestSearchDelegate delegate = _TestSearchDelegate();
+    addTearDown(() => delegate.dispose());
+
+    await tester.pumpWidget(TestHomePage(delegate: delegate));
+    await tester.tap(find.byTooltip('Search'));
+    await tester.pumpAndSettle();
+
+    final TextField textField = tester.widget<TextField>(find.byType(TextField));
+
+    expect(textField.autocorrect, isTrue);
+    expect(textField.enableSuggestions, isTrue);
+  });
+
+  testWidgets('Custom autocorrect value', (WidgetTester tester) async {
+    final _TestSearchDelegate delegate = _TestSearchDelegate(autocorrect: false);
+    addTearDown(() => delegate.dispose());
+
+    await tester.pumpWidget(TestHomePage(delegate: delegate));
+    await tester.tap(find.byTooltip('Search'));
+    await tester.pumpAndSettle();
+
+    final TextField textField = tester.widget<TextField>(find.byType(TextField));
+
+    expect(textField.autocorrect, isFalse);
+  });
+
+  testWidgets('Custom enableSuggestions value', (WidgetTester tester) async {
+    final _TestSearchDelegate delegate = _TestSearchDelegate(enableSuggestions: false);
+    addTearDown(() => delegate.dispose());
+
+    await tester.pumpWidget(TestHomePage(delegate: delegate));
+    await tester.tap(find.byTooltip('Search'));
+    await tester.pumpAndSettle();
+
+    final TextField textField = tester.widget<TextField>(find.byType(TextField));
+
+    expect(textField.enableSuggestions, isFalse);
+  });
+
+  testWidgets('keyboard show search button by default',
+      (WidgetTester tester) async {
     final _TestSearchDelegate delegate = _TestSearchDelegate();
     addTearDown(() => delegate.dispose());
 
@@ -1299,6 +1339,8 @@ class _TestSearchDelegate extends SearchDelegate<String> {
     super.searchFieldStyle,
     String? searchHint,
     super.textInputAction,
+    super.autocorrect,
+    super.enableSuggestions,
   }) : super(
           searchFieldLabel: searchHint,
         );