i18n: Update translation files and Polish translation (#5180)

* Update translation files

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* i18n: Update Polish translation

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

app/javascript/mastodon/locales/zh-TW.json

@@ -196,6 +196,7 @@
   "tabs_bar.notifications": "通知",
   "upload_area.title": "拖放來上傳",
   "upload_button.label": "增加媒體",
+  "upload_form.description": "Describe for the visually impaired",
   "upload_form.undo": "復原",
   "upload_progress.label": "上傳中...",
   "video.close": "關閉影片",
@@ -206,9 +207,5 @@
   "video.mute": "消音",
   "video.pause": "暫停",
   "video.play": "播放",
-  "video.unmute": "解除消音",
-  "video_player.expand": "展開影片",
-  "video_player.toggle_sound": "切換音效",
-  "video_player.toggle_visible": "切換可見性",
-  "video_player.video_error": "無法播放這影片"
+  "video.unmute": "解除消音"
 }