Disabling 'middle click to paste'

Running Wayland as a KDE user and I’ve successfully managed to disable the ability across my system everywhere except for the snap that I use the most (TradingView). My uneducated guess is that TradingView is using x-server within snap or wayland in a way that is shielded from the default desktop env.

Does anyone know how to disable middle click to paste within a snap?