fix: 修复工作流节点交互与旧浏览器兼容

- 修复 Tinyflow Vue wrapper 可选 boolean 默认关闭节点拖拽和连线的问题

- 为 Tinyflow 增加 structuredClone 兼容与 Chrome 90 构建目标

- 增加节点交互归一化与 Tab 空值防御

easyflow-ui-admin/packages/tinyflow-ui/src/utils/compat.ts

@@ -0,0 +1,22 @@
+type StructuredCloneFallback = <T>(value: T) => T;
+
+/**
+ * Installs browser compatibility shims required by Tinyflow.
+ */
+export function installTinyflowBrowserCompat() {
+  if (
+    typeof globalThis.structuredClone === 'function' ||
+    typeof JSON === 'undefined'
+  ) {
+    return;
+  }
+
+  const fallback: StructuredCloneFallback = (value) =>
+    value == null ? value : JSON.parse(JSON.stringify(value));
+
+  Object.defineProperty(globalThis, 'structuredClone', {
+    configurable: true,
+    value: fallback,
+    writable: true,
+  });
+}