docs: update Components list

Add SubsCapsButton, SeekToLive and LiveTracker.

Fixes #5980.

docs/guides/components.md

@@ -296,27 +296,30 @@ Player
 ├── TextTrackDisplay
 ├── LoadingSpinner
 ├── BigPlayButton
+├── LiveTracker (has no DOM element)
 ├─┬ ControlBar
 │ ├── PlayToggle
 │ ├── VolumePanel
 │ ├── CurrentTimeDisplay (hidden by default)
 │ ├── TimeDivider (hidden by default)
 │ ├── DurationDisplay (hidden by default)
-│ ├─┬ ProgressControl (hidden during live playback)
+│ ├─┬ ProgressControl (hidden during live playback, except when liveui: true)
 │ │ └─┬ SeekBar
 │ │   ├── LoadProgressBar
 │ │   ├── MouseTimeDisplay
 │ │   └── PlayProgressBar
 │ ├── LiveDisplay (hidden during VOD playback)
+│ ├── SeekToLive (hidden during VOD playback)
 │ ├── RemainingTimeDisplay
 │ ├── CustomControlSpacer (has no UI)
 │ ├── PlaybackRateMenuButton (hidden, unless playback tech supports rate changes)
 │ ├── ChaptersButton (hidden, unless there are relevant tracks)
 │ ├── DescriptionsButton (hidden, unless there are relevant tracks)
 │ ├── SubtitlesButton (hidden, unless there are relevant tracks)
 │ ├── CaptionsButton (hidden, unless there are relevant tracks)
+│ ├── SubsCapsButton
 │ ├── AudioTrackButton (hidden, unless there are relevant tracks)
-│ └── PictureInPictureToggle
+│ ├── PictureInPictureToggle
 │ └── FullscreenToggle
 ├── ErrorDisplay (hidden, until there is an error)
 ├── TextTrackSettings