[BUGFIX] Re-enable logging of ``Router::route()`` calls
With the implementation of `HTTP Components` we accidentally disabled
logging for calls to ``Router::route()``.
This patch adds the ``log()`` calls again.
The regression has been introduced with "[FEATURE] HTTP components for
handling requests" (Iac1bd27cd1f2869e597b696c896633f14703ec40).
Releases: master, 3.0, 2.3