Add package-lock.json restoration to fix remaining build pollution

Co-authored-by: javiercn <[email protected]>

Author: Copilot

eng/Npm.Workspace.nodeproj

@@ -73,13 +73,17 @@
   </Target>
 
   <Target Name="RestorePackageJsonFiles" AfterTargets="Build;Pack">
-    <Message Text="Restoring package.json files from backups..." Importance="high" />
+    <Message Text="Restoring package.json files and package-lock.json from backups..." Importance="high" />
     <ItemGroup>
       <PackageJsonBackupFiles Include="$(RepoRoot)**/*.json.bak" />
     </ItemGroup>
     <Move SourceFiles="@(PackageJsonBackupFiles)"
           DestinationFiles="@(PackageJsonBackupFiles -> Replace('.bak', ''))"
           Condition="@(PackageJsonBackupFiles) != ''" />
+    <!-- Restore package-lock.json from git if it was modified -->
+    <Exec Command="git checkout -- package-lock.json"
+          WorkingDirectory="$(RepoRoot)"
+          ContinueOnError="true" />
   </Target>
 
   <!-- Import Directory.Build.targets -->