fix test runner does not keepalive

Signed-off-by: Ronni Skansing <rskansing@gmail.com>

backend/controller/remoteBrowser.go

@@ -370,6 +370,10 @@ func (m *RemoteBrowserController) RunByID(g *gin.Context) {
 		}
 	}()
 
+	// NoKeepAlive=true so keepAlive() in test scripts returns immediately instead
+	// of parking the browser — closing the test panel must always stop cleanly.
+	runner.NoKeepAlive = true
+
 	// Run the script in a goroutine; Events channel is closed when done.
 	go runner.Run(ctx) //nolint:errcheck