fix: don't send "Vary: Accept-Encoding" header when precompress=false#15182

teemingc merged 3 commits intosveltejs:mainsveltejs/kit:mainfrom

theandrew168:issue-10343-conditional-sirv-gzip-brotlitheandrew168/kit:issue-10343-conditional-sirv-gzip-brotliCopy head branch name to clipboard