test: 隔离单测中的站点原生资源 (#6452)

* test: isolate native site resources

* refactor(test): retain sites stub helper contract

* fix(test): preserve sites stub probe imports

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Co-authored-by: jxxghp <jxxghp@gmail.com>

scripts/perf/module_shutdown_ab.py

@@ -16,10 +16,10 @@ PROJECT_ROOT = Path(__file__).resolve().parents[2]
 if str(PROJECT_ROOT) not in sys.path:
     sys.path.insert(0, str(PROJECT_ROOT))
 
-from app.testing.bootstrap import install_sites_stub, isolate_config_dir
+from app.testing.bootstrap import ensure_sites_stub, isolate_config_dir
 
 isolate_config_dir()
-install_sites_stub()
+ensure_sites_stub()
 
 from app.startup import lifecycle
 from app.startup.initializers import modules as modules_initializer