$(AndroidPackVersionSuffix)=rc.2; net9 is 35.0.0-rc.2 (#9233)

We branched for .NET 9 RC 1 from 79aab5c into release/9.0.1xx-rc1;
the main branch is now .NET 9 RC 2.

Update dotnet/android/main's version number to 35.0.0-rc.2.

Directory.Build.props

@@ -36,7 +36,7 @@
          * Bump first digit of the patch version for feature releases (and reset the first two digits to 0)
     -->
     <AndroidPackVersion>35.0.0</AndroidPackVersion>
-    <AndroidPackVersionSuffix>rc.1</AndroidPackVersionSuffix>
+    <AndroidPackVersionSuffix>rc.2</AndroidPackVersionSuffix>
     <IsStableBuild>false</IsStableBuild>
     <IsStableBuild Condition=" '$(AndroidPackVersionSuffix)' == 'rtm' ">true</IsStableBuild>
   </PropertyGroup>