[TIMOB-18078] iOS: FileStreamProxy invoke callback
[TIMOB-18078] FileStreamProxy correct event name
[TIMOB-18078] Bug Fix
[TIMOB-18078] Bug Fix
[TIMOB-18078] Bug Fix
Merge pull request #6381 from vishalduggal/timob-18078

[TIMOB-18078] iOS: Ti.Stream.read() doesn't work with Ti.Filesystem.FileStream