fix: modify tenant API

Author: lu-yg

base/src/test/java/com/tinyengine/it/common/handler/MockUserContext.java

@@ -23,6 +23,16 @@
  * @since 2025-04-14
  */
 public class MockUserContext implements LoginUserContext {
+    /**
+     * 返回当前用户所在的业务租户id
+     *
+     * @return 租户Id
+     */
+    @Override
+    public String getTenantId() {
+        return "1";
+    }
+
     /**
      * 返回当前用户所诉的业务租户信息
      *