Uplift `TypeAndMut` and `ClosureKind` to `rustc_type_ir`#118888

Merged

bors merged 3 commits intorust-lang:masterfrom

compiler-errors:uplift-more-things

Dec 15, 2023

Commits on Dec 12, 2023

Commits on Dec 14, 2023

Move special methods from ClosureKind back into rustc
compiler-errors
committed