fix: Use toolbox subclass instead of monkeypatch.

Author: gonfunko

src/navigation_controller.ts

@@ -10,8 +10,6 @@
  * @author [email protected] (Abby Schmiedt)
  */
 
-import './toolbox_monkey_patch';
-
 import * as Blockly from 'blockly/core';
 import {
   ShortcutRegistry,

src/navigation_deferring_toolbox.ts

@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as Blockly from 'blockly/core';
+
+export class NavigationDeferringToolbox extends Blockly.Toolbox {
+  protected override onKeyDown_(e: KeyboardEvent) {
+    // No-op, prevent keyboard handling by superclass in order to defer to
+    // global keyboard navigation.
+  }
+}
+
+export function registerNavigationDeferringToolbox() {
+  Blockly.registry.register(
+    Blockly.registry.Type.TOOLBOX,
+    Blockly.registry.DEFAULT,
+    NavigationDeferringToolbox,
+    true,
+  );
+}

src/toolbox_monkey_patch.js

@@ -10,6 +10,7 @@ import 'blockly/blocks';
 import {installAllBlocks as installColourBlocks} from '@blockly/field-colour';
 import {KeyboardNavigation} from '../src/index';
 import {registerFlyoutCursor} from '../src/flyout_cursor';
+import {registerNavigationDeferringToolbox} from '../src/navigation_deferring_toolbox';
 // @ts-expect-error No types in js file
 import {forBlock} from './blocks/p5_generators';
 // @ts-expect-error No types in js file
@@ -94,6 +95,7 @@ function createWorkspace(): Blockly.WorkspaceSvg {
   // Must be called before injection.
   KeyboardNavigation.registerKeyboardNavigationStyles();
   registerFlyoutCursor();
+  registerNavigationDeferringToolbox();
   const workspace = Blockly.inject(blocklyDiv, injectOptions);
 
   Blockly.ContextMenuItems.registerCommentOptions();

test/index.ts

@@ -10,6 +10,7 @@ import 'blockly/blocks';
 import {installAllBlocks as installColourBlocks} from '@blockly/field-colour';
 import {KeyboardNavigation} from '../../src/index';
 import {registerFlyoutCursor} from '../../src/flyout_cursor';
+import {registerNavigationDeferringToolbox} from '../../src/navigation_deferring_toolbox';
 // @ts-expect-error No types in js file
 import {blocks} from './../blocks/p5_blocks';
 // @ts-expect-error No types in js file
@@ -82,6 +83,7 @@ function createWorkspace(): Blockly.WorkspaceSvg {
   // Must be called before injection.
   KeyboardNavigation.registerKeyboardNavigationStyles();
   registerFlyoutCursor();
+  registerNavigationDeferringToolbox();
   const workspace = Blockly.inject(blocklyDiv, injectOptions);
 
   Blockly.ContextMenuItems.registerCommentOptions();