[android] Lint error about notifications permissions

[biodranik]

Can be seen here: https://github.com/organicmaps/organicmaps/actions/runs/9043924559/job/24852030289#step:5:436

CC @rtsisyk

  Lint found 2 errors, 438 warnings. First failure:
  
  /home/runner/work/organicmaps/organicmaps/android/app/src/main/java/app/organicmaps/downloader/DownloaderNotifier.java:80: Error: When targeting Android 13 or higher, posting a permission requires holding the POST_NOTIFICATIONS permission [NotificationPermission]
      notificationManager.notify(NOTIFICATION_ID, notification);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  The full lint text report is located at:
    /home/runner/work/organicmaps/organicmaps/android/app/build/intermediates/lint_intermediate_text_report/fdroidDebug/lintReportFdroidDebug/lint-results-fdroidDebug.txt