fix: check webhook key of Wecom tool in valid UUID form and fix typo (#2719)

api/core/tools/utils/uuid_utils.py

@@ -0,0 +1,9 @@
+import uuid
+
+
+def is_valid_uuid(uuid_str: str) -> bool:
+    try:
+        uuid.UUID(uuid_str)
+        return True
+    except Exception:
+        return False