 --> [ local path prefix ]/state_machine/initial_transitions/no_substates.fpp:4:5
  |
4 |       initial enter S
  |       ^^^^^^^^^^^^^^^ initial transition of state must go to state or choice defined in the same state
  |
 ::: [ local path prefix ]/state_machine/initial_transitions/no_substates.fpp:3:3
  |
3 | /   state S {
4 | |     initial enter S
5 | |   }
  | |___- transition path goes here

