Add translation support for root player aria-label

[tmjoen]

First of all I wanted to say thanks for a GREAT library! ❤️

Related Problem:

The element's aria-label attribute (e.g., "Video Player - My Title") is hardcoded in English and cannot be translated via the existing i18n/translations system (as far as I can tell). This creates an inconsistent accessibility experience for non-English websites where control labels are translated but the main player label is not.

Describe:

Allow customization of the root player aria-label. The label is currently constructed in #watchTitle() as:

${typeText} Player + (currentTitle ? - ${currentTitle} : '')

I'd like to be able to provide translations for "Video Player", "Audio Player", "Media Player", "Live", etc. through the existing layout translations system (PlyrLayout/DefaultLayout).

Anything Else?

Use case: Norwegian website needing aria-label="Videospiller - Min videotittel" instead of aria-label="Video Player - Min videotittel".