fix(client-presence): disabled (failing) attendees unit tests

[WillieHabi]

Description

A few unit tests were added disabled as current implementation does not meet expectations. This PR enable these tests and updates implementation:

Presence
  PresenceManager
    when connected
      attendee
        that is joining
          - second time is announced once via `attendeeJoined` with status "Connected" when prior is still connected
          - first time is announced via `attendeeJoined` with status "Connected" even if unknown to audience
        that is already known
          - is not announced via `attendeeJoined` when already "Connected"`

Changes include:

• Additional test case that tests collateral client with old connection ID
• Defining a joining attendee as a connected attendee that has a connectionId that has not been seen before by the recipient.
• When the local attendee disconnects, we temporarily lose connectivity status for remote attendees. To fix this we mark all remote attendee connections as stale upon reconnect and update their status to disconnected after 30 seconds of inactivity.

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