Sign xstate binary from correct location (#19470)

* Sign xstate binary from correct location

* Only submit xstate binary for x86

Author: mmitche

src/sign.builds

@@ -17,9 +17,13 @@
     <!-- Ensure cross targeting components are signed properly -->
     <WindowsNativeLocation Include="$(BinDir)$(CrossTargetComponentFolder)\*.exe" />
     <WindowsNativeLocation Include="$(BinDir)$(CrossTargetComponentFolder)\*.dll" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(BuildArch)' == 'x86'">
     <!-- Sign api-ms-win-core-xstate-l2-1-0 binary as it is only catalog signed in the current SDK. -->
-    <WindowsNativeLocation Include="$(BinDir)Redist\ucrt\DLLs\api-ms-win-core-xstate-l2-1-0.dll" />
+    <WindowsNativeLocation Include="$(BinDir)Redist\ucrt\DLLs\$(BuildArch)\api-ms-win-core-xstate-l2-1-0.dll" />
   </ItemGroup>
+
   <!-- sign the cross targeted files as well -->
   <ItemGroup Condition="'$(CrossTargetComponentFolder)' != ''">
     <WindowsNativeLocation Include="$(BinDir)$(CrossTargetComponentFolder)/*.dll" />