Backport "Prevent crash in SAM conversion with mismatched arity" to 3.3 LTS#607

tgodzik merged 2 commits intolts-3.3scala/scala3-lts:lts-3.3from

backport-lts-3.3-23877scala/scala3-lts:backport-lts-3.3-23877Copy head branch name to clipboard