* Add a failing test for issue #7340
If any delay occurs after "message.event" assignation in
LiveQueryServer._onAfterSave, the next subscription or request with a different
event might overwrite it, and by that using the wrong "push" function name.
* Remove updade of message and use res.event instead
This prevent computing function name from a
incorrect event if multiple subscriptions override
one by one the message.event.
* Update CHANGELOG.md
* Replace setTimeout by async/await expressions
87dcd23b6a