Give scheduled "Practice" sessions the real start ceremony too

A "practice" session used as a scheduled slot in a structured
race/sponsor event's session plan silently skipped the entire
countdown/lights/start-tone ceremony and jumped straight to running,
unlike qualifying/heat/final. Narrowed the ceremony-skip check to
only the standalone "Quick Open Practice" shortcut and free_practice
(both rolling/best-lap ranked with no fixed roster) - "practice" is
already ranked like a real timed session in every other respect and
now gets the same start sequence.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rc-racecore",
-  "version": "1.16.0",
+  "version": "1.16.1",
   "private": true,
   "description": "RC RaceCore live timing and race control with AMMC ingest and SQLite persistence",
   "engines": {