[self reminder]: update status when connecting in Monitor mode

[facontidavide]

Colors not updated when message number == 0.

[esromneb]

This is a theory:
In SidepanelMonitor::on_timer() the "header" updates don't contribute to the updates, only the "transitions" do. This is because the "transition" loop has this

Groot/bt_editor/sidepanel_monitor.cpp

Line 90 in dd61e4b

node_status.push_back( {index, status} );

but the loop above (starting on line 68) has no similar push_back. Is this correct?