input-method-v2: add helper to unconstrain popup
input-method-v2 doesn't use the usual xdg-popup/xdg-positioner stuff, so compositors need to have logic to unconstrain it. Add a helper in wlroots for this.
input-method-v2 doesn't use the usual xdg-popup/xdg-positioner stuff, so compositors need to have logic to unconstrain it. Add a helper in wlroots for this.