Update AddSigningDetails.cs

https://github.com/HotCakeX/Harden-Windows-Security/actions/runs/12513530135/job/34908276241

AppControl Manager/SiPolicyIntel/AddSigningDetails.cs

@@ -87,7 +87,16 @@ internal static SiPolicy.SiPolicy Add(string xmlPolicyFile, string certificateFi
 		}
 		else
 		{
-			IEnumerable<Signer> signersList = policyObject.PolicyType is not PolicyType.SupplementalPolicy ? [updatePolicySigner, supplementalPolicySigner] : [updatePolicySigner];
+			IEnumerable<Signer> signersList;
+
+			if (policyObject.PolicyType is not PolicyType.SupplementalPolicy)
+			{
+				signersList = [updatePolicySigner, supplementalPolicySigner];
+			}
+			else
+			{
+				signersList = [updatePolicySigner];
+			}
 
 			policyObject.Signers = [.. signersList];
 		}