[installer] add missing .pdb files to Xamarin.Android (#6799)

Partially fixes: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1467817

Changes: dotnet/java-interop@cbd9666...aae23c9

  * dotnet/java-interop@aae23c97: [Java.Interop] use $(DebugType)=portable (#958)
  * dotnet/java-interop@1987829f: [ci] Move CI builds to 1ES's hardened images. (#953)

A warning is printed when building with `-p:MonoSymbolArchive=true`:

	Warning: Directory obj\Release\120\android\assets contains Java.Interop.dll but no debug symbols file was found.

It turns out we are missing `Java.Interop.pdb` from our installer!

Update to dotnet/java-interop@aae23c97, which allows
`Java.Interop.pdb` to be built, and add `Java.Interop.pdb`,
`Mono.Posix.pdb`, and `System.EnterpriseServices.pdb` to our
`.vsix` installer.

Author: jonathanpeppers

build-tools/installers/create-installers.targets

@@ -134,10 +134,13 @@
     <_FrameworkFiles Include="@(MonoProfileAssembly->'$(FrameworkSrcDir)\$(BclFrameworkVersion)\%(Identity)')" />
     <_FrameworkFiles Include="@(MonoProfileAssemblySymbol->'$(FrameworkSrcDir)\$(BclFrameworkVersion)\%(Identity)')" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Java.Interop.dll" />
+    <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Java.Interop.pdb" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Mono.Data.Sqlite.dll.config" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Mono.Posix.dll" />
+    <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Mono.Posix.pdb" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\RedistList\FrameworkList.xml" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\System.EnterpriseServices.dll" />
+    <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\System.EnterpriseServices.pdb" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Xamarin.Android.NUnitLite.dll" />
     <_FrameworkFiles Include="$(FrameworkSrcDir)\$(BclFrameworkVersion)\Xamarin.Android.NUnitLite.pdb" />
     <_FrameworkFilesWin Include="$(FrameworkSrcDir)\$(FirstInstallerFrameworkVersion)\OpenTK-1.0.xml" />

external/Java.Interop

@@ -34,7 +34,8 @@
         Properties="$(_GlobalProperties)"
     />
     <ItemGroup>
-      <Assembly Include="$(JavaInteropFullPath)\bin\$(Configuration)Net45\*.dll*" />
+      <Assembly Include="$(JavaInteropFullPath)\bin\$(Configuration)Net45\*.dll" />
+      <Assembly Include="$(JavaInteropFullPath)\bin\$(Configuration)Net45\*.pdb" />
     </ItemGroup>
     <Copy
         SourceFiles="@(Assembly)"