Update SeleniumStandaloneServer.cs

Author: HaoK

src/Shared/E2ETesting/SeleniumStandaloneServer.cs

@@ -100,16 +100,17 @@ private static async Task InitializeInstance(ITestOutputHelper output)
                 psi.Arguments = $"/c npm {psi.Arguments}";
             }
 
+            // It's important that we get the folder value before we start the process to prevent
+            // untracked processes when the tracking folder is not correctly configure.
+            var trackingFolder = GetProcessTrackingFolder();
+            
             if (!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("helix")))
             {
                 // Just create a random tracking folder on helix
                 trackingFolder = Path.Combine(Directory.GetCurrentDirectory(), Path.GetRandomFileName());
                 Directory.CreateDirectory(trackingFolder);
             }
 
-            // It's important that we get the folder value before we start the process to prevent
-            // untracked processes when the tracking folder is not correctly configure.
-            var trackingFolder = GetProcessTrackingFolder();
             if (!Directory.Exists(trackingFolder))
             {
                 throw new InvalidOperationException($"Invalid tracking folder. Set the 'SeleniumProcessTrackingFolder' MSBuild property to a valid folder.");