selectEndpoints with no selected endpoints should remove previously selected endpoint

[maxired]

Description

When creating an application directly with the lib and on top jitsi-meet, I should be able to remove all participants from the selectedEndpoints

Current behavior

when calling selectEndpoints with an empty array, a previously selected participants is still prioritised

Expected Behavior

when calling selectEndpoints with an empty array, no participants should be priorisited

Possible Solution

the selectEndpoints method should remove check about !this._selectedEndpoints.length and the constraints getter should return the default constraints instead of the previous one.

Steps to reproduce

Given a running conference running with the lib,

• call selectParticipants on the conference object with an array containing a single participant : participants are selected
• then call selectParticipants with an empty array: Participant are still selected.

note: I also do not understand why when multiple participants are selected, we don't seem to send the list of selected participants. see here

[saghul]

If you want to receive no one you can set last N to zero.