[session] move context manager logic in the security context manager The `init_security` and `reset_security` method have no other user that the context manager itself. Having dedicated public function is not useful.

[session] hook control context directly use transaction object when applicable Most of the hooks control logic have been moved on Transaction anyway.

[session] move context manager logic in the hook controls context manager The `init_hooks_mode_categories` and `reset_hooks_mode_categories` have no other user that the context manager itself. Having dedicated public function is not useful.