[LegalizeDAG] Add asserts to verify the types of custom legalized operation...

[LegalizeDAG] Add asserts to verify the types of custom legalized operation matches the original node.

We've messed this up a few times recently on RISCV. Experiments
with these asserts found a couple issues on other targets as well.
They've all been cleaned up now so we can put in these asserts to
catch future issues

I had to waive Glue because ADDC/ADDE/etc legalization replaces
Glue with i32 on at least AArch64. X86 used to do the same before
we switched to ADDCARRY. So I guess that's just how that works.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D98979