chore(viteroll): use simple app format

[hi-ogawa]

• closes https://github.com/users/hi-ogawa/projects/4/views/1?pane=issue&itemId=89191567

As we switched hmr chunk extraction approach, we should be able to do the same on main.

todo

• test here
• test on wip: integrate rolldown dev rolldown/vite#66
  • refactor: extract hmr chunk from chunk.modules vite#6
• raise PR on rolldown

[hi-ogawa]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• chore(viteroll): use simple app format #78 👈 (View in Graphite)
• feat(viteroll): extract hmr chunk from normal build #77
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.