fix(rbac): remove self-manage interests permissions for app guests

- Remove permissions related to creating, reading, updating, and deleting owned interests for app guest users
- This change aligns with the requirement that app guests should not be able to manage their interests

Author: fulleni

lib/src/rbac/role_permissions.dart

@@ -25,13 +25,6 @@ final Set<String> _appGuestUserPermissions = {
   // notifications.
   Permissions.pushNotificationDeviceCreateOwned,
   Permissions.pushNotificationDeviceDeleteOwned,
-
-  // Allow all app users to manage their own interests.
-  Permissions.interestCreateOwned,
-  Permissions.interestReadOwned,
-  Permissions.interestUpdateOwned,
-  Permissions.interestDeleteOwned,
-
   // Allow all app users to manage their own in-app notifications.
   Permissions.inAppNotificationReadOwned,
   Permissions.inAppNotificationUpdateOwned,