[mlir] Add helper to check elementwise-mappable ops with tensors and scalars (#154872) This patch introduces a more general helper for identifying elementwise-mappable operations. The existing utility, `isElementwiseMappableOpOnRankedTensors`, only accepted operations when all operands were ranked tensors. In practice, many elementwise operations in MLIR allow mixing tensor operands with scalars. The new helper relaxes the restriction by accepting operands that are either ranked tensors or “scalar-like” types.
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