Fix check for if the partial sync schema needs to be initialized
Fix check for if the partial sync schema needs to be initialized

Checking the column count just doesn't work at all and we do need to check if
all of the properties we need exist.

realm/realm-core,realm/realm-core,realm/realm-object-store,realm/realm-core,realm/realm-core,realm/realm-object-store,realm/realm-core,realm/realm-object-store,realm/realm-core,realm/realm-core