Add comprehensive tests for vac-optimizer application

Co-authored-by: THoguet <61246905+THoguet@users.noreply.github.com>

src/app/components/calendar-year/calendar-year.ts

@@ -46,6 +46,7 @@ export class CalendarYear {
 					this.selectedDates.optimizeVacations(
 						{ ...vacationData },
 						this.calendarSettingsService,
+						this.calendarService,
 					);
 				}
 				this.isLoading.set(false);