fix(xo-6): add comments in host and pool pages to fix Vite build

[OlivierFL]

Description

The components /host/[id]/index.vue and pool/[id]/index.vue only use definePage() macro. The macro is removed during the build, leaving an empty script tag that causes the build to fail. This PR addresses this issue by adding a comment in the components to avoid empty content in <script> tags at build time.

Checklist

• Commit
  • Title follows commit conventions
  • Reference the relevant issue (Fixes #007, See xoa-support#42, See https://...)
  • If bug fix, add Introduced by
• Changelog
  • If visible by XOA users, add changelog entry
  • Update "Packages to release" in CHANGELOG.unreleased.md
• PR
  • If UI changes, add screenshots
  • If not finished or not tested, open as Draft