fix(player): Ensure fluid works when dimensions not initially known

[mister-ben]

Description

The video dimensions aren't necessarily known at loadedmetadata particularly with native playback on iOS. In fluid mode, the player defaults to 16:9 and does not update once the dimensions are known.

Specific Changes proposed

• Updates player styles on resize events.
• Fixes arguments passed to addEventedCallback so the callbacks are executed.

Fixes #6939

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[gkatsev]

Would this cause the player to resize on rendition changes on Safari during normal playback?

[gkatsev]

Seems like it's fine?

[mister-ben]

Renditions should all have the same aspect ratio.

[gkatsev]

Yeah, that's true. It's definitely legal, and I've seen one stream that does it, though, probably something we can ignore.
I was thinking that it would resize it based on the video width and height but yeah, it shouldn't.