as real machines like vacuum sealing machines never will produce a vacuum even near absolute zero Pascal, you always will have minuscule amounts of air left.
those will have their share of relative humidity.
hence: as a practical value, no , you wont have zero humidity from a vacuum sealing machine
it just might be low or even very low, which, on the other hand, might be sufficient for your purpose
typical cyanacrylate glues depend on water vapour - else nothing would happen.
with very low values of humidity (or, as per your question, 0 humidity) the glue hence might stay next-to-practically-forever uncured