Fix widget lock issue

[trufae]

As described in the release page , its needed to press a menu entry twice to get that done... https://github.com/radareorg/iaito/releases/tag/5.2.0

imho this panel lock thing blocking new panels to be added just brings more headaches than useful features. despite being nice to remove the (x) button from all them we should find a smarter solution which probably implies removing all this "modes" thing