[mlir][vector] Fix test case

[springerm]

Summary

There was an invalid test case in test-transfer-read-1d.mlir. A read was going out-of-bounds, but the dimension was marked as in-bounds.

mlir/test/Integration/Dialect/Vector/CPU/test-transfer-read-1d.mlir

func.func @transfer_read_1d_unit_stride(%A : memref<?x?xf32>) {
   return
 }
 
 // Vector load with unit stride only on last dim. Strides are not static, so
 // codegen must go through VectorToSCF 1D lowering.
 func.func @transfer_read_1d_non_static_unit_stride(%A : memref<?x?xf32>) {
   %c1 = arith.constant 1 : index
   %c2 = arith.constant 2 : index
+  %c4 = arith.constant 4 : index
   %c6 = arith.constant 6 : index
   %fm42 = arith.constant -42.0: f32
-  %1 = memref.reinterpret_cast %A to offset: [%c6], sizes: [%c1, %c2],  strides: [%c6, %c1]
+  %1 = memref.reinterpret_cast %A to offset: [%c6], sizes: [%c4, %c6],  strides: [%c6, %c1]
       : memref<?x?xf32> to memref<?x?xf32, strided<[?, ?], offset: ?>>
   %2 = vector.transfer_read %1[%c2, %c1], %fm42 {in_bounds=[true]}
       : memref<?x?xf32, strided<[?, ?], offset: ?>>, vector<4xf32>
   vector.print %2 : vector<4xf32>
   return
 }
 
 // Vector load where last dim has non-unit stride.