If tests use the helper mockPlanShardedSearchResponseOnConn() for PSS, they now use the default protocolVersion returned with getDefaultProtocolVersionForPlanShardedSearch() to mock their expected commands.

However, many test files define their own PSS and their own protocolVersions. Currently the exact value of the protocol version doesn't matter, but it would be good for all current tests to be updated to use getDefaultProtocolVersionForPlanShardedSearch() in case the protocolVersion is updated in the future.