Work around static graph restore issues in a better way

Static graph restore breaks with SetTargetFramework (NuGet/Home#11680).

Live ILLink targets (illink.targets) uses SetTargetFramework and so breaks restore of BuildInteration.proj.

The previous workaround was not fully functional because it broke './build nativeaot.build'.

src/coreclr/nativeaot/BuildIntegration/BuildIntegration.proj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.Build.Traversal">
+  <!-- TODO-LLVM-Upstream: https://github.com/dotnet/runtimelab/issues/2576 -->
   <PropertyGroup>
-    <RestoreUseStaticGraphEvaluation>false</RestoreUseStaticGraphEvaluation>
+    <IsNativeAotProject>false</IsNativeAotProject>
   </PropertyGroup>
 
   <PropertyGroup>