small fix: startup

Author: michiproep

src/ScreenshareHelper/Form1.cs

@@ -252,7 +252,7 @@ private void Form1_Load(object sender, EventArgs e)
         protected override void OnShown(EventArgs e)
         {
             base.OnShown(e);
-            isActive = false;
+            isActive = true;
             setWindowToBackground();
         }