Backport "Avoid loosing denotations of named types during `integrate`" to 3.3 LTS#373

tgodzik wants to merge 5 commits intolts-3.3scala/scala3-lts:lts-3.3from

backport-lts-3.3-22839scala/scala3-lts:backport-lts-3.3-22839Copy head branch name to clipboard