org-treat-S-cursor-todo-selection-as-state-change

org-treat-S-cursor-todo-selection-as-state-change is a variable defined in `org.el'.
Its value is

t

Documentation:
Non-nil means switching TODO states with S-cursor counts as state change.
This is the default behavior. However, setting this to nil allows a
convenient way to select a TODO state and bypass any logging associated
with that.

You can customize this variable.