fix: Added option to fallback to WebKit FairPlay Streaming setup.

[spuppo-mux]

Fixes #1261

This PR addresses a bug in Apple devices on newer OS versions when attempting to cast protected media using AirPlay. If the sending device is on OS version 26.1 or 26.2, playback will fail if when casting because of a NotSupportedError on session.generateRequest call.

Added useWebkitFairplay property and 'use-webkit-fairplay' attribute to fallback to webkit prefixed FairPlay Streaming DRM setup. (com.apple.fps.1_0 key system)

Also added drmSetupFallback property, which will be called when the specific call fails with a NotSupportedError. This property can be set to undefined if the user wants to avoid fallbacks for any reason or override it to choose a different approach. The default fallback consists on setting useWebkitFairplay and reloading the player.

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