Update on "Build optimized operators lib with -fexceptions"

It should be permissible for this library to use exceptions, since it is not required to supported embedded systems.

TODO: presumably we need to manage rollout of the torchgen patch?

Differential Revision: [D67904052](https://our.internmc.facebook.com/intern/diff/D67904052/)

[ghstack-poisoned]

Author: swolchok

.ci/docker/ci_commit_pins/pytorch.txt

@@ -1 +1 @@
-2ea4b56ec872424e486c4fe2d55da061067a2ed3
+f0c50a619c282a01ef1ad33690b7ab5e615d9fef

configurations/CMakeLists.txt

@@ -42,9 +42,8 @@ if(EXECUTORCH_BUILD_KERNELS_OPTIMIZED)
 
   generate_bindings_for_kernels(
     LIB_NAME "optimized_native_cpu_ops_lib" FUNCTIONS_YAML
-    ${CMAKE_CURRENT_BINARY_DIR}/merged.yaml
+    ${CMAKE_CURRENT_BINARY_DIR}/merged.yaml ADD_EXCEPTION_BOUNDARY
   )
-  target_compile_options(optimized_native_cpu_ops_lib PRIVATE "-fexceptions")
   message("Generated files ${gen_command_sources}")
 
   # optimized_native_cpu_ops_lib: Register optimized op kernels into the runtime
@@ -57,6 +56,7 @@ if(EXECUTORCH_BUILD_KERNELS_OPTIMIZED)
     DEPS
     executorch
   )
+  target_compile_options(optimized_native_cpu_ops_lib PRIVATE "-fexceptions")
 
   install(TARGETS optimized_native_cpu_ops_lib DESTINATION lib)
 endif()