[InstCombine] Support one-hot merge for logical and/or

If a logical and/or is used, we need to be careful not to propagate
a potential poison value from the RHS by inserting a freeze
instruction. Otherwise it works the same way as bitwise and/or.

This is intended to address the regression reported at
https://reviews.llvm.org/D101191#2751002.

Differential Revision: https://reviews.llvm.org/D102279