fix(core): opt out telemetry if it was set to false (#6335)

packages/frontend/core/src/telemetry.tsx

@@ -0,0 +1,20 @@
+import { appSettingAtom } from '@toeverything/infra';
+import { useAtomValue } from 'jotai/react';
+import mixpanel from 'mixpanel-browser';
+import { useLayoutEffect } from 'react';
+
+export function Telemetry() {
+  const settings = useAtomValue(appSettingAtom);
+  useLayoutEffect(() => {
+    if (process.env.MIXPANEL_TOKEN) {
+      mixpanel.init(process.env.MIXPANEL_TOKEN || '', {
+        track_pageview: true,
+        persistence: 'localStorage',
+      });
+    }
+    if (settings.enableTelemetry !== false) {
+      mixpanel.opt_out_tracking();
+    }
+  }, [settings.enableTelemetry]);
+  return null;
+}