[Bug](brpc) fix sync_filter_size/apply_filterv2 has wrong closure (#39155)

## Proposed changes
1. fix sync_filter_size/apply_filterv2 has wrong closure
2. avoid to use thread local storage of iobuf

Author: BiteTheDDDDt

be/src/runtime/runtime_filter_mgr.cpp

@@ -343,7 +343,7 @@ Status RuntimeFilterMergeControllerEntity::send_filter_size(const PSendFilterSiz
             closure->request_->set_filter_size(cnt_val->global_size);
 
             stub->sync_filter_size(closure->cntl_.get(), closure->request_.get(),
-                                   closure->response_.get(), brpc::DoNothing());
+                                   closure->response_.get(), closure.get());
             closure.release();
         }
     }
@@ -425,7 +425,11 @@ Status RuntimeFilterMergeControllerEntity::merge(const PMergeFilterRequest* requ
         }
 
         if (data != nullptr && len > 0) {
-            request_attachment.append(data, len);
+            void* allocated = malloc(len);
+            memcpy(allocated, data, len);
+            // control the memory by doris self to avoid using brpc's thread local storage
+            // because the memory of tls will not be released
+            request_attachment.append_user_data(allocated, len, [](void* ptr) { free(ptr); });
             has_attachment = true;
         }
 
@@ -459,7 +463,7 @@ Status RuntimeFilterMergeControllerEntity::merge(const PMergeFilterRequest* requ
                 continue;
             }
             stub->apply_filterv2(closure->cntl_.get(), closure->request_.get(),
-                                 closure->response_.get(), brpc::DoNothing());
+                                 closure->response_.get(), closure.get());
             closure.release();
         }
     }