Moved AndroidUseDesignerAssembly step to be before the MarkStep under .net 6

Author: dellis1972

src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.ILLink.targets

@@ -95,7 +95,7 @@ This file contains the .NET 5-specific targets to customize ILLink
       <_TrimmerCustomSteps
           Condition=" '$(AndroidUseDesignerAssembly)' == 'true' "
           Include="$(_AndroidLinkerCustomStepAssembly)"
-          AfterStep="CleanStep"
+          BeforeStep="MarkStep"
           Type="MonoDroid.Tuner.FixLegacyResourceDesignerStep"
       />
       <_PreserveLists Include="$(MSBuildThisFileDirectory)..\PreserveLists\*.xml" />