Add failing test for stopped transceivers

[k0nserv]

Description

A small failing test were upon stopping a transceiver it is not rejected in the following offer.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.15%. Comparing base (5552def) to head (67eac48).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2274      +/-   ##
==========================================
+ Coverage   84.08%   84.15%   +0.06%     
==========================================
  Files          80       80              
  Lines        9068     9068              
==========================================
+ Hits         7625     7631       +6     
+ Misses       1021     1018       -3     
+ Partials      422      419       -3     

Flag	Coverage Δ
go	84.15% <ø> (+0.06%)	⬆️

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