fix: Context menu on TextFormBox (#1219)

Author: bdlukaa

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [next]
+
+- fix: Context Menu was not available on TextFormBox ([#1216](https://github.com/bdlukaa/fluent_ui/pull/1216), [#1219](https://github.com/bdlukaa/fluent_ui/pull/1219))
+
 ## 4.11.4
 
 - feat: Added Tagalog localization support ([#1207](https://github.com/bdlukaa/fluent_ui/pull/1207))

lib/src/controls/form/text_box.dart

@@ -198,7 +198,7 @@ class TextBox extends StatefulWidget {
     this.stylusHandwritingEnabled =
         EditableText.defaultStylusHandwritingEnabled,
     this.enableIMEPersonalizedLearning = true,
-    this.contextMenuBuilder = _defaultContextMenuBuilder,
+    this.contextMenuBuilder = defaultContextMenuBuilder,
     this.spellCheckConfiguration,
     this.magnifierConfiguration,
   })  : assert(obscuringCharacter.length == 1),
@@ -560,7 +560,7 @@ class TextBox extends StatefulWidget {
   ///  * [AdaptiveTextSelectionToolbar], which is built by default.
   final EditableTextContextMenuBuilder? contextMenuBuilder;
 
-  static Widget _defaultContextMenuBuilder(
+  static Widget defaultContextMenuBuilder(
       BuildContext context, EditableTextState editableTextState) {
     final undoController = editableTextState.widget.undoController;
     return FluentTextSelectionToolbar(

lib/src/controls/form/text_form_box.dart

@@ -129,7 +129,8 @@ class TextFormBox extends ControllableFormBox {
     Color? highlightColor,
     Color? errorHighlightColor,
     Color? unfocusedColor,
-    EditableTextContextMenuBuilder? contextMenuBuilder,
+    EditableTextContextMenuBuilder? contextMenuBuilder =
+        TextBox.defaultContextMenuBuilder,
     TextMagnifierConfiguration? magnifierConfiguration,
     SpellCheckConfiguration? spellCheckConfiguration,
   })  : assert(initialValue == null || controller == null),