Fix bad merge

Author: Forgind

src/Resolvers/Microsoft.NET.Sdk.WorkloadManifestReader/SdkDirectoryWorkloadManifestProvider.cs

@@ -198,7 +198,7 @@ bool TryGetWorkloadSet(string workloadSetVersion, out WorkloadSet? workloadSet)
                 _manifestsFromInstallState = installState.Manifests is null ? null : WorkloadSet.FromDictionaryForJson(installState.Manifests!, _sdkVersionBand);
             }
 
-            if (_workloadSet == null && installState.UseWorkloadSets == true && availableWorkloadSets.Any())
+            if (workloadSet == null && installState.UseWorkloadSets == true && availableWorkloadSets.Any())
             {
                 var maxWorkloadSetVersion = availableWorkloadSets.Keys.Aggregate((s1, s2) => VersionCompare(s1, s2) >= 0 ? s1 : s2);
                 workloadSet = availableWorkloadSets[maxWorkloadSetVersion.ToString()];