message: fix: resolve merge conflict - showing proper validation message if trying to import contributions that are not installed
diff: @@ -50,6 +50,9 @@ export class ImportErrorFormatterService {
  case 'supported-handler-ref':
  messageHeader = this._translate.instant('IMPORT-ERROR:HANDLER_NOT_INSTALLED');
  break;
  + case 'contrib-not-installed':
  + messageHeader = this._translate.instant('IMPORT-ERROR:CONTRIB_NOT_INSTALLED');
  + break;
  default:
  messageHeader = this._translate.instant('APP-LIST:BROKEN_RULE_UNKNOWN');
  break;
  @@ -135,6 +138,11 @@ export class ImportErrorFormatterService {
  }
  );
  break;
  + case 'contrib-not-installed':
  + errorMessage = this._translate.instant('IMPORT-ERROR:CONTRIB_NOT_INSTALLED_CONTENT', {
  + ref: detail.params.ref,
  + });
  + break;
  default:
  errorMessage =
  detail.message ||
  