nonisolated(nonsending)
withoutActuallyEscaping
`withoutActuallyEscaping` is type-checked in a special way which means that we need to explicitly inject `nonisolated(nonsending)` isolation when forming a reference to this builtin. (cherry picked from commit 48f4d7b688)
48f4d7b688
@cdecl
getEquivalentDeclContextFromSourceFile
renameLabelsLenient