[mlir][x86] Extends vector.contract Flat dot-product lowering for arg offset (#185167)
Extends `vector_contract_to_packed_type_dot_product` transform pass to
include `args` offset check while validating the `vector.contract`.
Eg: `vector.transfer_read %arg1[%arg3, %c0], %0 {in_bounds = [true,
true]} : !memref, !vec`