Hot fix 4.36.2

[SameerK-MSFT]

Fixes #2897.
Issue about broker failure in iOS

Seems like original issue was deleted.

MSAL 4.36.1
When customer called PCA.GetAccountsAsync() on iOS with broker, it throws exception with message
UIViewController is null, so MSAL.NET cannot invoke the iOS broker. See https://aka.ms/msal-net-ios-broker .
Stack

at Microsoft.Identity.Client.Platforms.iOS.iOSBroker.IsBrokerInstalledAndInvokable () [0x00057] in <7cee57cda5c7458490ed414ae408d3f6>:0 at Microsoft.Identity.Client.ClientApplicationBase.GetAccountsFromBrokerAsync (System.String homeAccountIdFilter, Microsoft.Identity.Client.Cache.ICacheSessionManager cacheSessionManager, System.Threading.CancellationToken cancellationToken) [0x00064] in <7cee57cda5c7458490ed414ae408d3f6>:0 at Microsoft.Identity.Client.ClientApplicationBase.GetAccountsInternalAsync (Microsoft.Identity.Client.TelemetryCore.Internal.Events.ApiEvent+ApiIds apiId, System.String homeAccountIdFilter, System.Threading.CancellationToken cancellationToken) [0x0022c] in <7cee57cda5c7458490ed414ae408d3f6>:0 at Microsoft.Identity.Client.ClientApplicationBase.GetAccountsAsync (System.Threading.CancellationToken cancellationToken) [0x00078] in <7cee57cda5c7458490ed414ae408d3f6>:0 at Microsoft.Identity.Client.ClientApplicationBase.GetAccountsAsync () [0x00076] in <7cee57cda5c7458490ed414ae408d3f6>:0 at UserDetailsClient.MainPage.AcquireTokenAsync () [0x0007f] in /Users/samkhand/Desktop/Gits/ReleaseTest/active-directory-xamarin-native-v2/2-With-broker/UserDetailsClient/UserDetailsClient/MainPage.xaml.cs:114

Changes proposed in this request
Merging hotfix back in the master
Changes include adding a check if broker is installed

Testing
As per the Hotfix branch

Performance impact
NA