CallKit uppercasing call uuid

[bsiddiqui]

If I call RNCallKit.endCall('ae708c43-f567-4bcf-8940-fb7013a8aa30'), the end call callback will get data with the uuid uppercased:

{ callUUID: 'AE708C43-F567-4BCF-8940-FB7013A8AA30' }

Is that expected?

[brunsy]

It's caused by the use of NSUUID everywhere...
For now I ended up converting back to lowercase in the event listeners.

@ianlin would you accept a PR to accept mixed case but always return lowercase UUID's?

[ianlin]

Hi @bsiddiqui @brunsy, thanks for pointing this out. Yeah definitely welcome any PR :)