[llvm] [InstructionSimplify] Use m_CheckedInt for simplifyAndInst and simplifyOrInst (NFC) (PR #100682)

[Nikita Popov via llvm-commits]

nikic wrote:

In line with guidelines laid out by the code of conduct committee, please do not open new PRs until all of your existing PRs have been merged or closed.

https://github.com/llvm/llvm-project/pull/100682