PYTHON-5685 Fix unified spec sync metadata for csot and sessions tests (#2669)

Author: blink1073

.evergreen/remove-unimplemented-tests.sh

@@ -7,7 +7,6 @@ rm $PYMONGO/test/discovery_and_monitoring/unified/pool-clear-application-error.j
 rm $PYMONGO/test/discovery_and_monitoring/unified/pool-clear-checkout-error.json  # PYTHON-4918
 rm $PYMONGO/test/discovery_and_monitoring/unified/pool-clear-min-pool-size-error.json  # PYTHON-4918
 rm $PYMONGO/test/client-side-encryption/spec/unified/client-bulkWrite-qe.json  # PYTHON-4929
-rm $PYMONGO/test/sessions/snapshot-sessions.json # PYTHON-5559
 
 # Python doesn't implement DRIVERS-3064
 rm $PYMONGO/test/collection_management/listCollections-rawdata.json