feat: initialize usage tracker

Signed-off-by: Bart Jaskulski bjaskulski@protonmail.com

src/Initialization/Simple/SimpleFreeStrategy.php

@@ -55,6 +55,7 @@ class SimpleFreeStrategy implements InitializationStrategy {
 		// Flush usage tracker late, to remain backward compatible with plugins which could instantiate
 		// the tracker on their own through `wpdesk_tracker_instance` filter.
 		$this->get_tracker_instance();
+		$this->register_tracker_ui_extensions();
 
 		return $this->plugin;
 	}