Merge pull request #6666 from Aqr-K/feat/plugin-instance-target-enablement

feat(plugin): 插件实例默认调用目标与启停，未指定实例时不再兜底取第一个

tests/test_plugin_instance_log_context_entrypoints.py

@@ -38,7 +38,7 @@ def _lifecycle(*, plugins, running=None):
         classes=classes,
         running=running,
         load_plugins=lambda _pid, _installed, _check: list(plugins),
-        installed_plugins=lambda: ["DemoPluginWork"],
+        loadable_plugins=lambda: ["DemoPluginWork"],
         plugin_config=lambda _pid: {},
         auth_checker=lambda _plugin: True,
         clear_modules=MagicMock(),