[iOS] Fix view removal process for AutofillContextAction.cancel

shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm

@@ -2675,8 +2675,11 @@ - (void)hideTextInput {
   [self removeEnableFlutterTextInputViewAccessibilityTimer];
   _activeView.accessibilityEnabled = NO;
   [_activeView resignFirstResponder];
-  [_activeView removeFromSuperview];
-  [_inputHider removeFromSuperview];
+  // Removes the focus from the `_activeView` (UIView<UITextInput>)
+  // when the user stops typing (keyboard is hidden).
+  // For more details, refer to the discussion at:
+  // https://github.com/flutter/engine/pull/57209#discussion_r1905942577
+  [self cleanUpViewHierarchy:YES clearText:YES delayRemoval:NO];
 }
 
 - (void)triggerAutofillSave:(BOOL)saveEntries {

shell/platform/darwin/ios/framework/Source/FlutterTextInputPluginTest.mm

@@ -2691,6 +2691,27 @@ - (void)testInitialActiveViewCantAccessTextInputDelegate {
   XCTAssertNil(textInputPlugin.activeView.textInputDelegate);
 }
 
+- (void)testAutoFillDoesNotTriggerOnHideButTriggersOnCommit {
+  // Regression test for https://github.com/flutter/flutter/issues/145681.
+  NSMutableDictionary* configuration = self.mutableTemplateCopy;
+  [configuration setValue:@{
+    @"uniqueIdentifier" : @"field1",
+    @"hints" : @[ UITextContentTypePassword ],
+    @"editingValue" : @{@"text" : @""}
+  }
+                   forKey:@"autofill"];
+  [configuration setValue:@[ [configuration copy] ] forKey:@"fields"];
+
+  [self setClientId:123 configuration:configuration];
+  XCTAssertEqual(self.viewsVisibleToAutofill.count, 1ul);
+
+  [self setTextInputHide];
+  // Before the fix in https://github.com/flutter/engine/pull/57209, it was 0ul.
+  XCTAssertEqual(self.viewsVisibleToAutofill.count, 1ul);
+
+  [self commitAutofillContextAndVerify];
+}
+
 #pragma mark - Accessibility - Tests
 
 - (void)testUITextInputAccessibilityNotHiddenWhenShowed {