Restrict parsed stream quality suffixes (#49869)

* fix: restrict parsed stream quality suffixes

* test: reuse playlist export fixture for quality suffix

tests/commands/playlist/export.test.ts

@@ -19,6 +19,7 @@ describe('playlist:export', () => {
       content('tests/__data__/expected/playlist_export/.api/streams.json')
     )
   })
+
 })
 
 function content(filepath: string) {