Fix source-build validation leg

Author: am11

src/coreclr/tools/aot/ILCompiler/ILCompiler_publish.csproj

@@ -2,7 +2,7 @@
   <!-- This project is publishes a self-contained copy of ILCompiler. -->
   <PropertyGroup>
     <_IsPublishing>true</_IsPublishing>
-    <RuntimeIdentifier>$(OutputRID)</RuntimeIdentifier>
+    <RuntimeIdentifier>$(_portableOS)-$(TargetArchitecture)</RuntimeIdentifier>
     <PublishDir>$(RuntimeBinDir)ilc-published/</PublishDir>
     <SelfContained>true</SelfContained>
     <PublishTrimmed>true</PublishTrimmed>

src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj

@@ -2,7 +2,7 @@
   <!-- This project is publishes a self-contained copy of crossgen2. -->
   <PropertyGroup>
     <_IsPublishing>true</_IsPublishing>
-    <RuntimeIdentifier>$(OutputRID)</RuntimeIdentifier>
+    <RuntimeIdentifier>$(_portableOS)-$(TargetArchitecture)</RuntimeIdentifier>
     <PublishDir>$(RuntimeBinDir)crossgen2-published/</PublishDir>
     <SelfContained>true</SelfContained>
     <PublishTrimmed>true</PublishTrimmed>