[InstCombine] add support for multi-use Y of (X op Y) op Z --> (Y op Z) op X

For (X op Y) op Z --> (Y op Z) op X
we can still do transform when Y is multi-use. In D131356 limit it to one-use,
this patch remove this limit.

This is still not a complete solution, I add a todo test to show it.
In this case, X and Y are both multi use, we can't differentiate how to convert based on this.
But at least we don't make the code worse，and it can solve half the scenarios.