Update on "[ExecuTorch] Add broadcasting support to optimized op_div"

Summary:
Similar to broadcast support in op_mul

Test Plan:
Tests added

Reviewers:

Subscribers:

Tasks:

Tags:

cc larryliu0820 manuelcandales

Differential Revision: [D69491815](https://our.internmc.facebook.com/intern/diff/D69491815)

[ghstack-poisoned]

Author: kimishpatel

kernels/optimized/cpu/op_div.cpp

@@ -122,8 +122,7 @@ Tensor& opt_div_out(
   } else if (selected_optimized_path != ElementwiseOptimizedPath::kNone) {
     // Reason for using alpha is becasuse handle_broadcast_elementwise
     // is used for add and sub as well:
-    static constexpr const char op_name[] = "div.out";
-    ET_SWITCH_REALB_TYPES(out_type, ctx, "mul.out", CTYPE, [&]() {
+    ET_SWITCH_REALB_TYPES(out_type, ctx, "div.out", CTYPE, [&]() {
       if (selected_optimized_path ==
               ElementwiseOptimizedPath::kBroadcast2dBy1dReverseArguments ||
           selected_optimized_path ==