Increase coverage of testing for behaviour around node loss and reconnection

[George-Payne]

Reconnection tests currently only cover reads and writes. it would be good to expand them out to cover more apis , such as persistent subscriptions.

https://github.com/EventStore/EventStore-Client-NodeJS/blob/master/src/test/connection/reconnect.test.ts

Originally posted by @oskardudycz in https://github.com/EventStore/EventStore-Client-NodeJS/pull/220#discussion_r741920747