fix(build): fix ssr environment emitAssets: true when sharedConfigBuild: true#20787

sapphi-red merged 5 commits intovitejs:mainvitejs/vite:mainfrom

hi-ogawa:09-17-fix_build_fix_ssr_environment_emitassets_with_sharedconfigbuildhi-ogawa/vite:09-17-fix_build_fix_ssr_environment_emitassets_with_sharedconfigbuildCopy head branch name to clipboard