Optimize callcache invalidation for refinements

Fixes [Bug #21201]

This change addresses a performance regression where defining methods
inside `refine` blocks caused severe slowdowns. The issue was due to
`rb_clear_all_refinement_method_cache()` triggering a full object
space scan via `rb_objspace_each_objects` to find and invalidate
affected callcaches, which is very inefficient.

To fix this, I introduce `vm->cc_refinement_table` to track
callcaches related to refinements. This allows us to invalidate
only the necessary callcaches without scanning the entire heap,
resulting in significant performance improvement.

vm_callinfo.h

@@ -345,6 +345,7 @@ vm_cc_new(VALUE klass,
         break;
       case cc_type_refinement:
         *(VALUE *)&cc->flags |= VM_CALLCACHE_REFINEMENT;
+        rb_vm_insert_cc_refinement(cc);
         break;
     }