fix: allow dynamic parameters in .html.astro routes#15944

Princesseuh merged 6 commits into

withastro:mainwithastro/astro:mainfrom

fkatsuhiro:fix/ssr-cannot-handle-slug-html-astrofkatsuhiro/withastro-astro:fix/ssr-cannot-handle-slug-html-astroCopy head branch name to clipboard