Fixing audit sources condition (#3322)

Author: benrr101

src/Directory.Build.props

@@ -72,15 +72,17 @@
   </PropertyGroup>
 
   <!-- NuGet Audit Settings -->
-  <PropertyGroup>
+  <PropertyGroup Condition="'$(TF_BUILD)' == 'true'">
     <!--
       ADO does not support audit/vulnerability feeds, so the audit feed is specified (in
       nuget.config) as nuget.org. OneBranch default network isolation does not allow connections
       to nuget.org. To avoid this issue, we will disable auditing for official builds, but leave it
       enabled for local builds.
       @TODO: If/when auditing is enabled for central feeds services, this can be removed. 
     -->
-    <NuGetAudit Condition="'$(TF_BUILD)' == 'true'">false</NuGetAudit>
+    <NuGetAudit>false</NuGetAudit>
+  </PropertyGroup>
+  <PropertyGroup>
     <NuGetAuditMode>all</NuGetAuditMode>
   </PropertyGroup>