[Mlir-commits] [mlir] [mlir][IR] Add return value to `replaceUsesWithIf` indicating that a substitution happened (PR #235748)

[Mehdi Amini]

https://github.com/joker-eph approved this pull request.

LG, I tweaked the description to be more explicit, PTAL.

https://github.com/llvm/llvm-project/pull/235748