fix(server): don't publicly reveal user count (#4409)

* fix: don't reveal user count publicly

* fix: mobile and user controller

* fix: update other frontend endpoints

* fix: revert openapi change

* chore: open api

* fix: initialize

* openapi

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Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

server/test/e2e/server-info.e2e-spec.ts

@@ -102,6 +102,7 @@ describe(`${ServerInfoController.name} (e2e)`, () => {
         oauthButtonText: 'Login with OAuth',
         mapTileUrl: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
         trashDays: 30,
+        isInitialized: true,
       });
     });
   });