[iOS] Simulator crash when there is a user join with camera on randomly

[AmyL219]

Describe the bug 1.Join in a group call through simulator 2.Use web/app to join the same group call with camera on as a new participant 3.Find the SwiftUI app could crash in AVMakeRectWithAspectRatioFill(CGSize,int) function

Expected behavior Simulator shouldn't crash

Screenshots

iOS SDK version:

• 2.0.1-beta 1 Xcode version:
• 13.1 Simulator version:
• iOS 15

[AmyL219]

https://skype.visualstudio.com/SPOOL/_workitems/edit/2629990

Did some debugging and found the crash issues is because of the rendererView is created by scalingMode: .crop with the SwiftUI env. CallingSDK testing app use .fit mode, so their app didn't crash. But after changing the testing app scalingMode into crop, it eventually crashed at same place. (See the attachment pic) If we changed our composite rendererView creation to non-option mode (which make it default to be .fit mode), there is no more composite crash in simulator any more. But the view may not fit the designer requirement.