You still can have it on toggle. When you don't want to make Sneak Attack, you untoggle it, make single attack, and toggle it again. But yeah, it may became annoying if you need it literally every turn.
As I see it now we have very unconsistent UI. Opportunity Attack is limited on once per round and you may not want to use that opportunity on the first mob. Now you have no chance to influence it. Solasta is showing popup window with question but frankly I don't like it. It is also annoying.
Maybe there is a compromise. Have it on toggle which influence standard attack action but also have special attack buttons ignoring the toggle to make forced attack with or without Sneak Attack. Or maybe something like holding Ctrl-Left-click will disable all toggles?
