fix: fixes drag drop test freezing on windows

It  seems tha testfx framework has an issue running drag drop test on windows
using the "glass" UI robot
but the altwernative "awt" robot is working
to fix that we add the -Dtestfx.robot=awt in maven-surefire-plugin argument line

todolist/fxui/pom.xml

@@ -197,7 +197,7 @@
                         <headless>${headlessTests}</headless>
                     </systemPropertyVariables>
                     <argLine>
-                    @{jaCoCoArgLine}
+                    @{jaCoCoArgLine} -Dtestfx.robot=awt
                     --add-opens todolist.ui/todolist.ui=ALL-UNNAMED --add-exports javafx.graphics/com.sun.javafx.application=ALL-UNNAMED
                     --add-opens javafx.graphics/com.sun.glass.ui=ALL-UNNAMED --add-exports javafx.graphics/com.sun.glass.ui=ALL-UNNAMED
                     --add-exports javafx.graphics/com.sun.glass.ui.delegate=ALL-UNNAMED