feat: show template version in system info for local builds (#9018)

## Summary
<img width="985" height="417" alt="스크린샷 2026-02-21 오전 1 05 10"
src="https://github.com/user-attachments/assets/4543a5aa-d1ae-4be7-971e-7b1454625829"
/>



- Add `installed_templates_version` and `required_templates_version` to
the system stats schema
- Display the template version as a badge on the About page alongside
ComfyUI and Frontend badges
- Display the template version as a row in the local System Info table
- Highlight badge (red severity) and table row (red text) when installed
version doesn't match required version, so users can quickly spot
outdated templates

Fixes #4006

## Test plan

- [x] Open Settings > About and verify "Templates v{version}" badge
appears
- [x] Verify "Templates Version" row appears in System Info table
- [ ] When `installed_templates_version` matches
`required_templates_version`: badge is default color, table row is
default color
- [ ] When versions don't match: badge turns red, table row turns red
- [ ] When `installed_templates_version` is absent (package not
installed): badge is hidden, table row shows empty

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/components/dialog/content/setting/AboutPanel.vue

@@ -13,7 +13,7 @@
         class="about-badge inline-flex items-center no-underline"
         :title="badge.url"
       >
-        <Tag class="mr-2">
+        <Tag class="mr-2" :severity="badge.severity">
           <template #icon>
             <i :class="[badge.icon, 'mr-2 text-xl']" />
           </template>