Allow project approval workflows to set if a reviewer can or can not review their own requests

backend/src/ee/services/access-approval-request/access-approval-request-service.ts

@@ -320,6 +320,11 @@ export const accessApprovalRequestServiceFactory = ({
         message: "The policy associated with this access request has been deleted."
       });
     }
+    if (!policy.selfApprovals && actorId === accessApprovalRequest.requestedByUserId) {
+      throw new BadRequestError({
+        message: "Failed to review access approval request. Users are not authorized to review their own request."
+      });
+    }
 
     const { membership, hasRole } = await permissionService.getProjectPermission({
       actor,