Part 1: Modify iOS broker to handle iOS 13 changes

[jennyf19]

iOS 13 has made changes around the authenticator's ability to verify applications. Currently, MSAL.NET relies on the sourceApplication to verify requests, this will need to be modified.

[bgavrilMS]

What is the user impact?

[jennyf19]

@bgavrilMS iOS broker will not work. Based on the way we handle the sourceApplication and the call coming back from broker, we will have to modify how this is handled. Don't have all the details at the moment, but wanted to get an issue up so it's not forgotten about.

[bgavrilMS]

Just trying to understand the impact here. So you mean that once people upgrade to iOS 13, pre-existing apps that use the broker will stop working? Sounds like a high priority item then.

[henrik-me]

@jennyf19 : I created a new issue to track part 2 as this issue is linked to the 4.4.0 release.
Part2: #1396

[henrik-me]

Cloned the issue to fix the rest in the next release