Docs: Stale Docs from #1615

[!NOTE] Triage estimate — cycle priority and story points were assigned during an AI-assisted planning pass and are rough first guesses. Confirm or adjust when you pick this up.

Summary

API changes in #1615 (feat(core): add captions radio group and harden popover triggers) may have made the following documentation stale.

Triggering PR

https://github.com/videojs/v10/pull/1615

API Changes

• CaptionsButton — added menuTrigger boolean prop (default false). When true with multiple tracks, pointer activation opens a menu instead of toggling. React sets this automatically inside Menu.Trigger.
• PlaybackRateButton — added menuTrigger boolean prop (default false). When true, pointer activation opens a menu instead of cycling.
• Menu — Menu.Item and Menu.Trigger gained a type prop (MenuItemSettingType, e.g. playback-rate / captions); new ItemValue part added (media-menu-item-value); Menu.Trigger's disabled description was simplified.
• PlaybackRateMenu — component removed entirely (media-playback-rate-menu, media-playback-rate-menu-trigger, usePlaybackRateMenu). No documentation currently references it (verified via search), so nothing appears to need removal — flagged here only for awareness.

Stale Documentation Found

High Confidence

File	Line(s)	Issue	API Change
None found

Medium Confidence

File	Line(s)	Issue	API Change
None found

Low Confidence

File	Line(s)	Issue	API Change
site/src/content/docs/reference/captions-button.mdx	38–42, 61–63	Behavior/Accessibility prose describes only the default toggle interaction. The new menuTrigger mode opens a menu instead of toggling. The prop table auto-generates via <ComponentReference>, but the prose may want a note about menu-trigger behavior.	Added menuTrigger prop
site/src/content/docs/reference/playback-rate-button.mdx	38–40, 64–66	Behavior/Accessibility prose describes only the default cycle-on-click interaction. The new menuTrigger mode opens a menu instead of cycling. Prop table auto-generates; prose may want a note.	Added menuTrigger prop

Recommended Actions

• Review the Behavior and Accessibility sections of reference/captions-button.mdx and reference/playback-rate-button.mdx; consider adding a brief note about the menuTrigger mode (auto-enabled inside Menu.Trigger). The auto-generated prop tables already pick up the new prop, so this is prose-only.
• Confirm whether a Menu reference page or settings-menu guide should document the new ItemValue part (media-menu-item-value) and the type prop on Menu.Item / Menu.Trigger — no such page exists today, so there is nothing currently stale, but the new surface is undocumented.
• Confirm the removal of PlaybackRateMenu leaves no dangling references — a repo-wide docs search found none.