Rollup merge of #120817 - compiler-errors:more-mir-errors, r=oli-obk

Fix more `ty::Error` ICEs in MIR passes

Fixes #120791 - Add a check for `ty::Error` in the `ByMove` coroutine pass
Fixes #120816 - Add a check for `ty::Error` in the MIR validator

Also a drive-by fix for a FIXME I had asked oli to add

r? oli-obk

Author: matthiaskrgr