Flyover map type bug.

[alina-v1]

Description
With an Apple mapkit flyover map type clustering has a bug.
On the map I have two equal clusters (and items in them) the only difference is cluster coordinate.

Smartphone

• Device: [e.g. iPhone X]
• OS: [e.g. iOS 13.3.1]

Checklist

• [✔️] I updated Cluster to the latest version.
• [✔️] I read the Contribution Guidelines.
• [✔️] I read the documentation.
• [✔️] I searched for existing GitHub issues.