fix(visitors): Fixes going live when the meeting is created. (#14905)

* fix(visitors): Fixes going live when first moderator joins.

* squash(jwt): Drop unused field.

* squash(jwt): Fixes loading token_util for visitors component.

* squash(jwt): Validate nbf if it exists as it is optional.

* squash(visitors): Keep prefer visitor state for not live meetings.

* squash(visitors): Automatically go live only when there is a moderator in the meeting.

* squash(visitors): Automatically go live only when there is an occupant in the meeting.

* squash(visitors): Drops a debug log.

* squash(visitors): Makes sure we first disconnect before attempting a reconnect.

If the reconnect happens too quickly, before being disconnected and the conference is still not live we will detect that we are still connected and will skip connecting to visitors service, and in the next moment we will disconnect.

* squash(visitors): Slow down successful reconnects.

If a meeting was just live but was destroyed jicofo will return it is not live, but service will return that it just got live. Slows down reconnects and at some point the service will return that the meeting is not live. The drawback is that it will take some time to connect when the meeting is created and back live.

* squash(visitors): Randomize the delay up to the available value.

resources/prosody-plugins/token/util.lib.lua

@@ -247,13 +247,8 @@ end
 -- session.jitsi_meet_context_group - the group value from the token
 -- session.jitsi_meet_context_features - the features value from the token
 -- @param session the current session
--- @param acceptedIssuers optional list of accepted issuers to check
 -- @return false and error
-function Util:process_and_verify_token(session, acceptedIssuers)
-    if not acceptedIssuers then
-        acceptedIssuers = self.acceptedIssuers;
-    end
-
+function Util:process_and_verify_token(session)
     if session.auth_token == nil then
         if self.allowEmptyToken then
             return true;
@@ -310,7 +305,7 @@ function Util:process_and_verify_token(session, acceptedIssuers)
         session.auth_token,
         self.signatureAlgorithm,
         key,
-        acceptedIssuers,
+        self.acceptedIssuers,
         self.acceptedAudiences
     )
     if claims ~= nil then