[mlir][sparse] infer returned type for sparse_tensor.to_[buffer] ops (#83343)

The sparse structure buffers might not always be memrefs with rank == 1
with the presence of batch levels.

mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp

@@ -1058,17 +1058,9 @@ public:
     // Replace the requested coordinates access with corresponding field.
     // The cast_op is inserted by type converter to intermix 1:N type
     // conversion.
-    Location loc = op.getLoc();
     auto desc = getDescriptorFromTensorTuple(adaptor.getTensor());
-    Value field = desc.getCrdMemRefOrView(rewriter, loc, op.getLevel());
-
-    // Insert a cast to bridge the actual type to the user expected type. If the
-    // actual type and the user expected type aren't compatible, the compiler or
-    // the runtime will issue an error.
-    Type resType = op.getResult().getType();
-    if (resType != field.getType())
-      field = rewriter.create<memref::CastOp>(loc, resType, field);
-    rewriter.replaceOp(op, field);
+    rewriter.replaceOp(
+        op, desc.getCrdMemRefOrView(rewriter, op.getLoc(), op.getLevel()));
 
     return success();
   }