[InstCombine] Reuse common code between foldSelectICmpAndBinOp and foldSelectICmpAnd. (#131902) The commit that was removed from https://github.com/llvm/llvm-project/pull/127905 due to the conflict with https://github.com/llvm/llvm-project/pull/128741. The use of common code results in that the foldSelectICmpAndBinOp also use knownbits in the same way as was added for foldSelectICmpAnd in https://github.com/llvm/llvm-project/pull/128741. proof for the use of knowbits in foldSelectICmpAndBinOp: https://alive2.llvm.org/ce/z/RYXr_k
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