feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/foundation/global/src/utils/global-loading.ts

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+export function removeGlobalLoading() {
+  const spin = document.querySelector('#global-spin-wrapper');
+  // 对于不支持MutationObserver的浏览器直接隐藏 loading，避免影响正常页面的展示
+  if (!window.MutationObserver && spin) {
+    (spin as HTMLElement).style.display = 'none';
+    return;
+  }
+  const targetNode = document.querySelector('#root');
+  const observerOptions = {
+    childList: true, // 观察目标子节点的变化，是否有添加或者删除
+    attributes: true, // 观察属性变动
+    subtree: true, // 观察后代节点，默认为 false
+  };
+
+  const observer = new MutationObserver(function callback(mutationList) {
+    // root 节点有任何变化就取消 loading，并取消观测
+    mutationList.forEach(mutation => {
+      if (spin) {
+        (spin as HTMLElement).style.display = 'none';
+      }
+      observer.disconnect();
+    });
+  });
+  observer.observe(targetNode as Element, observerOptions);
+}