PYTHON-5016 Fix initial sync in spawn host script (#2038)

Author: blink1073

.evergreen/sync-spawn-host.sh

@@ -8,6 +8,7 @@ fi
 target=$1
 
 echo "Syncing files to $target..."
+rsync -haz -e ssh --exclude '.git' --filter=':- .gitignore' -r . $target:/home/ec2-user/mongo-python-driver
 # shellcheck disable=SC2034
 fswatch -o . | while read f; do rsync -hazv -e ssh --exclude '.git' --filter=':- .gitignore' -r . $target:/home/ec2-user/mongo-python-driver; done
 echo "Syncing files to $target... done."