Bump external/Java.Interop from 3436a30 to 5bca8ad

[dependabot]

Bumps external/Java.Interop from 3436a30 to 5bca8ad.

Commits

• 5bca8ad [build] Automatically add NullableAttributes.cs for netstandard2.0 (#1188)
• 45437e2 [Java.Interop] suppress IL3050 with #pragma (#1201)
• 1c9c8c9 [Java.Interop.Tools.Maven] Initial commit. (#1179)
• See full diff in compare view

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[jpobst]

With dotnet/java-interop#1188, all instances of the nullable attributes types defined in NullableAttributes.cs are now internal.

However, Xamarin.Android.Build.Tasks was consuming the public types from its reference to Java.Interop.Tools.JavaCallableWrappers.

MavenExtensions.cs(26,32): error CS0122: 'NotNullWhenAttribute' is inaccessible due to its protection level
MamJsonParser.cs(92,43): error CS0122: 'NotNullWhenAttribute' is inaccessible due to its protection level
MamJsonParser.cs(92,81): error CS0122: 'NotNullWhenAttribute' is inaccessible due to its protection level

We can apply almost the same logic from dotnet/java-interop#1188 to xamarin-android. The difference is that neither of the netstandard2.0 projects in XA that need the attributes have $(Nullable)='enabled' and thus our Condition fails.

(Xamarin.Android.Build.Tasks and Xamarin.Android.Tools.JavadocImporter include .cs files from Java.Interop that have been NRT annotated and need the nullable attribute types.)

Thus we add $(Nullable)='annotations' to them which allows one to use NRT syntax but does not emit any NRT warnings since these assemblies have not been converted. We can then modify the NullableAttributes.cs adding logic to additionally key off the annotations value.