[Mono.Android] Update api-compat reference file for current API-33 (#…

…7822)

Context: c339d1f

Before we start building API-34 previews for `Mono.Android.dll`,
update `tests/api-compatibility/reference/Mono.Android.zip` & related
to match the `Mono.Android.dll` currently generated by our build, in
particular including the changes of c339d1f.  This will help make
clearer any breakages for API-34.

Mainly this updates for all of the `[ObsoleteOSPlatform]` fixes we
have made over the past few months.

Additionally, the reference file is now based on a .NET Android
`Mono.Android.dll` instead of a Classic `Mono.Android.dll`, so
additional framework dependent changes will no longer have to be
tracked in "acceptable breakages".

As a result, there would need to be fixups made to the Classic
`api-compat` breakage file, but as we are in the process of removing
Classic from `main`, we simply disable the `api-compat` check when
building Classic `Mono.Android.dll` for now.

src/Mono.Android/Mono.Android.targets

@@ -264,7 +264,7 @@
   </ItemGroup>
   <Target
       Name="_CheckApiCompatibility"
-      Condition=" '$(DisableApiCompatibilityCheck)' != 'True' "
+      Condition=" '$(DisableApiCompatibilityCheck)' != 'True' And '$(TargetFramework)' != 'monoandroid10'"
       AfterTargets="CopyFilesToOutputDirectory"
 
       Inputs="$(TargetPath);@(ApiCompatibilityFiles)"