[PYTHON-2971] PossiblePrimary must not be checked for wire version compatibility of MaxStalenessSeconds - MongoDB Jira

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DRIVERS-1912:
The Max Staleness specification requires drivers check wire version for support of maxStalenessSeconds:

Clients are required to throw an error if maxStalenessSeconds is set, and any server in the topology has maxWireVersion less than 5.

Servers of type PossiblePrimary must not be considered in this check, since they have no known maxWireVersion.

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DRIVERS-1912: The Max Staleness specification requires drivers check wire version for support of maxStalenessSeconds: Clients are required to throw an error if maxStalenessSeconds is set, and any server in the topology has maxWireVersion less than 5. Servers of type PossiblePrimary must not be considered in this check, since they have no known maxWireVersion.

This ticket was split from DRIVERS-1912, please see that ticket for a detailed description.

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MOTOR-848 PossiblePrimary must not be checked for wire version compatibility of MaxStalenessSeconds