fix: inherit MediaDriver instead of AccessPointDriver

A Sonos speaker implements none of the access-point surface — no SSIDs, no radio
configuration, no MAC ACL. It has get_playback_state, get_volume, play and
get_zone_info. It inherited AccessPointDriver because nothing better existed,
and netOrk reads that role to decide what belongs in its wireless page and its
AP profile pickers, so a speaker showed up in both.

napalm-device-types now has MediaDriver, which is what this is. TYPE_LABEL
becomes "Media" rather than "Access Point".

Same root cause as netork#117.

napalm_sonos/sonos_driver.py

@@ -6,7 +6,7 @@ from typing import Any
 
 from napalm.base.exceptions import ConnectionException
 
-from napalm_device_types import AccessPointDriver, FingerprintRule, PortSpec
+from napalm_device_types import FingerprintRule, MediaDriver, PortSpec
 from napalm_device_types.models import DeviceActionResultDict
 
 """NAPALM driver for Sonos speakers.
@@ -19,7 +19,7 @@ media-playback controls.
 _VOLUME_RE = re.compile(r"^\d+$")
 
 
-class SonosDriver(AccessPointDriver):
+class SonosDriver(MediaDriver):
     """NAPALM driver for controlling Sonos speakers.
 
     Implements the standard NAPALM interface plus media-playback methods