Issues creating `PlexClient` instances from `PlexServer` sessions in 4.15.8

[jjlawren]

Describe the Bug

An unexpected argument is passed to PlexClient when server sessions are parsed.

Code Snippets

>>> plex = PlexServer(...)
>>> plex.sessions()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/jjlawren/src/plexapi/plexapi/server.py", line 817, in sessions
    return self.fetchItems('/status/sessions')
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 257, in fetchItems
    subresults = self.findItems(data, cls, ekey, **kwargs)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 330, in findItems
    item = self._buildItemOrNone(elem, cls, initpath)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 109, in _buildItemOrNone
    return self._buildItem(elem, cls, initpath)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 101, in _buildItem
    return ecls(self._server, elem, initpath, parent=self)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 62, in __init__
    self._loadData(data)
  File "/home/jjlawren/src/plexapi/plexapi/video.py", line 1188, in _loadData
    PlexSession._loadData(self, data)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 904, in _loadData
    self.player = self.findItem(data, etag='Player')
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 341, in findItem
    return self.findItems(data, cls, initpath, rtag, **kwargs)[0]
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 330, in findItems
    item = self._buildItemOrNone(elem, cls, initpath)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 109, in _buildItemOrNone
    return self._buildItem(elem, cls, initpath)
  File "/home/jjlawren/src/plexapi/plexapi/base.py", line 101, in _buildItem
    return ecls(self._server, elem, initpath, parent=self)
TypeError: __init__() got an unexpected keyword argument 'parent'

Expected Behavior

No response

Additional Context

This avoids the issue, but I'm unclear if this is the proper fix:

diff --git a/plexapi/client.py b/plexapi/client.py
index 279b497..a1bf292 100644
--- a/plexapi/client.py
+++ b/plexapi/client.py
@@ -62,7 +62,7 @@ class PlexClient(PlexObject):
     key = '/resources'

     def __init__(self, server=None, data=None, initpath=None, baseurl=None,
-          identifier=None, token=None, connect=True, session=None, timeout=None):
+          identifier=None, token=None, connect=True, session=None, timeout=None, parent=None):
         super(PlexClient, self).__init__(server, data, initpath)
         self._baseurl = baseurl.strip('/') if baseurl else None
         self._clientIdentifier = identifier

Operating System and Version

Linux

Plex Media Server Version

Any

Python Version

3.9

PlexAPI Version

4.15.8

[jjlawren]

Issue introduced by #1328.