Touch long press on main terminal area doesn't open up context menu

A touch long press on main terminal area doesn't open up context menu as expected. For users that deactivate the menu bar (which might be done on devices with a smaller screen, like e.g. small tablets) that means they might be unable to copy&paste.

Affected XFCE4 Terminal version: 1.1.3

Affected Desktop: KDE Plasma 6 Wayland

Affected Linux Distribution: postmarketOS Edge based on Alpine 3.21.0_alpha20240923