Fix test_MC16a_Digi_tf_configuration after TGC update (22.0)

Fix test_MC16a_Digi_tf_configuration after TGC update (22.0 version). I opened two MRs to fix issues in the nightlies faster.

Fixes ATLASSIM-5987.

/cc @jchapman @tlari @jbeirer @pberta @jmaurer