Fix sync test

PadelClubDataTests/SynchronizationTests.swift

@@ -56,10 +56,13 @@ struct SynchronizationTests {
         }
         
         // Cleanup
-        let eventCollection1: SyncedCollection<Event> =  StoreCenter.main.mainStore.registerSynchronizedCollection(synchronousLoading: true)
+        let eventCollection1: SyncedCollection<Event> = await StoreCenter.main.mainStore.synchronizedCollectionWithFileLoading()
+        #expect(eventCollection1.hasLoaded == true)
+        
         await eventCollection1.deleteAsync(contentOfs: Array(eventCollection1))
         
-        let eventCollection2: SyncedCollection<Event> =  self.secondStoreCenter.mainStore.registerSynchronizedCollection(synchronousLoading: true)
+        let eventCollection2: SyncedCollection<Event> = await  self.secondStoreCenter.mainStore.synchronizedCollectionWithFileLoading()
+        #expect(eventCollection2.hasLoaded == true)
         eventCollection2.clear()
 
         // Create