fix(tests): include Add to AI chat in canvas toolbar order assertion

The canvas selection toolbar gained an Add to AI chat action in the

layer-mentions work; update the test expectation so the insert-module action

remains in the second position.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: Zen0-99

src/__tests__/canvas/selectionToolbar.test.tsx

@@ -363,6 +363,7 @@ describe('canvas selection toolbar', () => {
     expect(labels).toEqual([
       'Drag selected layers',
       'Insert module',
+      'Add selected layers to AI chat',
       'Duplicate selected layers',
       'Delete selected layers',
     ])