status/network: Fix quicksettings enterprise connections

status/network: Fix quicksettings enterprise connections

In d6779f34dac6c80e178a308314fe59884a65f383, the switch
to shell_app_activate_action() was made without
also wrapping the action parameter in an av variant.
This patch adjusts network.js to use the correct av
variant type when attempting to connect to an
enterprise AP from the quicksettings panel.

Fixes d6779f34dac6c80e178a308314fe59884a65f383
Closes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8590

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3834>