Backport "fix: Allow `as` as an infix type in non context bound types" to 3.3 LTS#76

tgodzik merged 3 commits intolts-3.3scala/scala3-lts:lts-3.3from

backport-lts-3.3-21849scala/scala3-lts:backport-lts-3.3-21849Copy head branch name to clipboard