refactor: auto inject hmr preamble without `transformIndexHtml`#891

hi-ogawa wants to merge 16 commits intomainvitejs/vite-plugin-react:mainfrom

10-01-feat_auto_inject_hmr_preamble_without_transformindexhtml_vitejs/vite-plugin-react:10-01-feat_auto_inject_hmr_preamble_without_transformindexhtml_Copy head branch name to clipboard