Update Overleaf assist paywall to reflect group and institution licensing (#24061)

GitOrigin-RevId: 5df447febb845ed60ddb04428d7f6a0375f351f7

services/web/types/user.ts

@@ -58,6 +58,9 @@ export type User = {
     enabled: boolean
   }
   featureUsage?: FeatureUsage
+  planCode?: string
+  isMemberOfGroupSubscription?: boolean
+  hasInstitutionLicence?: boolean
 }
 
 export type LoggedOutUser = {