cloud trial refactor

apps/server/src/integrations/static/static.module.ts

@@ -42,6 +42,9 @@ export class StaticModule implements OnModuleInit {
           ? this.environmentService.getSubdomainHost()
           : undefined,
         COLLAB_URL: this.environmentService.getCollabUrl(),
+        BILLING_TRIAL_DAYS: this.environmentService.isCloud()
+          ? this.environmentService.getBillingTrialDays()
+          : undefined,
       };
 
       const windowScriptContent = `<script>window.CONFIG=${JSON.stringify(configString)};</script>`;