fix(ui/modules/Common/Form/DroppableTextArea): do not jump a line when a key return/enter is used

linphone-desktop/ui/modules/Common/Form/DroppableTextArea.qml

@@ -79,6 +79,7 @@ Item {
           insert(cursorPosition, '')
         } else if (event.key === Qt.Key_Return || event.key === Qt.Key_Enter) {
           handleValidation()
+          event.accepted = true
         }
       }
     }