Before this bug fix, when using F1, we get this warning:

  Constraint validation failed: LCID: constraint failed (/home/richie/openairinterface5g/cmake_targets/ran_build/build/openair2/F1AP/MESSAGES/F1AP_LCID.c:30)

This is because (1) we don't actually store the LCID, then (2) we did
not put it into the F1 ASN.1 structures. Fix both, to make this warning
disappear.

To actually print the full error message, increase the error buffer
size. Also, for the future, to avoid guessing, print ASN.1 XML when we
encounter a failed constraint validation.