[InstSimplify] Test case for icmp imply (NFC)

ugt/uge/sgt/sge test for the extension to isImpliedCondOperands
case from issue 62441 and 61393:
(X >> Z) <=(u) Y ==> X <=(to u) Y and (X > Y +_{nuw} 1) ==> X != Y

Differential Revision: https://reviews.llvm.org/D149512

Author: floatshadow