STM: encode in static types that vernac_when is only used when VtSideff

The stm.ml changes show that for the other classifications either the
vernac_when was ignored, or there was an assert on it forcing it to be
Now or Later depending on the vernac_type.

One may also note that the classification used in top_printers
`VtQuery,VtNow` would have failed those asserts...

0 files changed, 0 insertions, 0 deletions