Update eng/internal-nativeaot-build.targets

Author: am11

eng/internal-nativeaot-build.targets

@@ -7,7 +7,7 @@
     (when alternative compiler, i.e. gcc, is not selected)
   -->
   <Target Name="LocateNativeCompiler"
-          Condition="'$(HostOS)' != 'windows'"
+          Condition="'$(HostOS)' != 'windows' and !$(RuntimeIdentifier.StartsWith('win-'))"
           BeforeTargets="SetupOSSpecificProps">
     <PropertyGroup>
       <CppCompilerAndLinker Condition="'$(CppCompilerAndLinker)' == ''">clang</CppCompilerAndLinker>