[FIX] Filters are not being applied correctly in Omnichannel Current Chats list

[rafaelblink]

Proposed changes (including videos or screenshots)

After a few changes in previous releases, Current Chats page filter stopped working.

Before

After

Issue(s)

Steps to test or reproduce

Further comments

[renatobecker]

I've tested your code, but it doesn't fix the issue as you can see below:

[renatobecker]

Also:

The first request sent from the client when the Current Chats list is opened looks like this:

{"t":"l","$or":[{"servedBy._id":{"$in":[""]}},{"servedBy.username":{"$in":[""]}}],"open":{"$exists":false}}

After that, when I set the first date parameter(From), the server gets this:

{"t":"l"}

And when a set the last date parameter(To) the server gets this:

{"t":"l","ts":{"$gte":"2021-01-26T03:00:00.000Z","$lte":"2021-01-26T03:00:00.000Z"}}

So, it's clear it won't work properly. Can you fix this, @rafaelblink ?
Thanks.

[renatobecker]

@rafaelblink your PR didn't pass the tests.
Did you notice that?