Fix metadatabase WAL mode crash on macOS 15

Author: lukaskubanek

Sources/SQLiteData/CloudKit/Internal/Metadatabase.swift

@@ -25,7 +25,12 @@
       throw InMemoryDatabase()
     }
 
-    let metadatabase = try DatabasePool(path: url.path(percentEncoded: false))
+    let metadatabase: any DatabaseWriter =
+      if url.isInMemory {
+        try DatabaseQueue(path: url.absoluteString)
+      } else {
+        try DatabasePool(path: url.path(percentEncoded: false))
+      }
     try migrate(metadatabase: metadatabase)
     return metadatabase
   }