feat: Implement live to live switch back

[sebastianpiq]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @sebastianpiq, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request implements a significant feature to improve the "live to live switch back" experience within the player. It introduces more robust seeking behavior for dynamic live streams by intelligently handling target seek times relative to the DVR window. Additionally, it provides new functionalities for managing the DVR window and includes general code cleanup and refactoring to enhance the player's stability and maintainability.

Highlights

• Improved Live Stream Seeking: Enhanced the logic for switching back to live content, ensuring that seeks are correctly handled within the DVR window for dynamic manifests. If a target seek time is before the DVR window start, the player now intelligently seeks to the beginning of the DVR window.
• DVR Window Control: Introduced new API methods (getDvrWindowStart, seekToStartDvrWindow) in PlaybackController for better management and interaction with the DVR window in live streams.
• Code Refinements and Cleanup: Cleaned up unused fullscreenDiv related code from MediaManager.js and refactored event resolution logic in EventController.js and seek time calculation in AlternativeMediaController.js for improved maintainability.

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[gemini-code-assist]

Code Review

This pull request implements the switch back from a live alternative stream to the main live stream, ensuring seeks are handled correctly within the DVR window. The changes look good overall, but I've found a couple of minor issues: a typo in a variable name and a leftover debugging statement that should be removed.

[gemini-code-assist]

This console.log statement appears to be for debugging purposes and should be removed before merging.

[gemini-code-assist]

There's a typo in the variable name erarlyToResolveEvent. It should be earlyToResolveEvent for better readability and to avoid confusion. I've corrected it in the suggestion.

Suggested change

	const erarlyToResolveEvent = _checkForEarliestResolutionTimeEvents(event);
	if (!erarlyToResolveEvent || event.triggeredReadyToResolve) {
	return false;
	}
	const resolutionTime = event.calculatedPresentationTime - event.alternativeMpd .earliestResolutionTimeOffset;
	const resolutionTime = event.calculatedPresentationTime - erarlyToResolveEvent.earliestResolutionTimeOffset;
	const earlyToResolveEvent = _checkForEarliestResolutionTimeEvents(event);
	if (!earlyToResolveEvent || event.triggeredReadyToResolve) {
	return false;
	}
	const resolutionTime = event.calculatedPresentationTime - earlyToResolveEvent.earliestResolutionTimeOffset;