inputmethod: update state on new value not cached value

We want to update the inputpanel state on new value which is being set
and not based on the cached value.

Fixes the keyboard going in wrong mode like pre-edit mode when closed
and re-opened.

src/inputmethod.cpp

@@ -134,9 +134,7 @@ void InputMethod::setActive(bool active)
         }
 
         waylandServer()->inputMethod()->sendActivate();
-        if (m_active) {
         adoptInputMethodContext();
-        }
     } else {
         updateInputPanelState();
     }