team: don't try to connect to teamd in update_connection()

Merged Beniamino Galvani requested to merge bg/team-avoid-dbus-error into main

In constructed(), NMDevice starts watching the D-Bus name owner or monitoring the unix socket, and so it is always aware if teamd is running. When it is, NMDevice connects to it and initializes priv->tdc.

It is not useful to try to connect to teamd in update_connection() because warnings will be generated by NM and by libteam if teamd is not running. As explained above the connection is always initialized when teamd is available, and so we can just check priv->tdc.

https://bugzilla.redhat.com/show_bug.cgi?id=2182029

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