fix(toolbar): remove context mounted check when calling color picker

There is no context used when calling color picker callback, remove all
those unnecessary checks to fix color not applied on Android platform.

Author: realth000

lib/src/editor_tool_bar.dart

@@ -263,7 +263,6 @@ class _BBCodeEditorToolbarState extends State<BBCodeEditorToolbar> {
 
   /// Refer: flutter_quill/lib/src/widgets/toolbar/color/color_button.dart
   void _changeColor(
-    BuildContext context,
     QuillController controller,
     bool isBackground,
     Color? color,
@@ -291,14 +290,14 @@ class _BBCodeEditorToolbarState extends State<BBCodeEditorToolbar> {
       colorButtonOptions = QuillToolbarColorButtonOptions(
         customOnPressedCallback: (controller, isBackground) async {
           final pickResult = await widget._colorPicker!(context);
-          if (pickResult == null || !mounted) {
+          if (pickResult == null) {
             return;
           }
 
           if (pickResult.clearColor) {
-            _changeColor(context, controller, false, null);
+            _changeColor(controller, false, null);
           } else {
-            _changeColor(context, controller, false, pickResult.color);
+            _changeColor(controller, false, pickResult.color);
           }
         },
       );
@@ -309,14 +308,14 @@ class _BBCodeEditorToolbarState extends State<BBCodeEditorToolbar> {
       backgroundColorButtonOptions = QuillToolbarColorButtonOptions(
         customOnPressedCallback: (controller, isBackground) async {
           final pickResult = await widget._backgroundColorPicker!(context);
-          if (pickResult == null || !mounted) {
+          if (pickResult == null) {
             return;
           }
 
           if (pickResult.clearColor) {
-            _changeColor(context, controller, true, null);
+            _changeColor(controller, true, null);
           } else {
-            _changeColor(context, controller, true, pickResult.color);
+            _changeColor(controller, true, pickResult.color);
           }
         },
       );