fix(ci): use vp for chromatic build-storybook command

Chromatic action tries to spawn pnpm directly which isn't on PATH
when using setup-vp. Use buildScriptName to run via vp instead.

Author: fengmk2

.github/workflows/chromatic.yml

@@ -33,6 +33,8 @@ jobs:
 
       - name: 🧪 Run Chromatic Visual and Accessibility Tests
         uses: chromaui/action@0794e6939fe40ce46a88963f818092afc427da5b # v15.3.0
+        with:
+          buildScriptName: vp run build-storybook
         env:
           CHROMATIC_BRANCH: ${{ github.event.pull_request.head.ref || github.ref_name }}
           CHROMATIC_SHA: ${{ github.event.pull_request.head.sha || github.sha }}