Fixes #629 and Tidied up the code from Jearom.

[jamsoft]

:sparkles: What kind of change does this PR introduce? (Bug fix, feature, docs update...)

Fixes the iOS full screen video issue

:bug: Recommendations for testing

Test with playing a full screen video on an iPhone.

:memo: Links to relevant issues/docs

https://github.com/Baseflow/XamarinMediaManager/issues/629

:thinking: Checklist before submitting

• [ ] All projects build
• [ ] Follows style guide lines
• [ ] Relevant documentation was updated
• [ ] Rebased onto current develop

[martijn00]

I've merged and published it.

[jamsoft]

Fantastic! Thanks for the speedy work!