[SelectionDAG] Improve `CLMUL` lowering for `Promote` types wider than register width (#209265) For `ISD::CLMUL`, add a check to `PromoteIntRes_CLMUL` to take advantage of the cross-product expansion in `ExpandIntRes_CLMUL` when possible for `Promote` types which are wider than the register width (e.g. `i96` for 64-bit registers). GitOrigin-RevId: 4d5bc903c8a79fbadb62d8dd1e7cc93ad7a394fd