Make computeDenot take overrides into account
Make computeDenot take overrides into account

If previous denotation was a sym denotation, it might be overridden
by a different symbol in a new phase or run. So it is not correct to
simply return the current version of the symbol, as was done before.

We now recompute the member if there is a chance that the symbol could
be overridden.

angi2/dotty,dotty-staging/dotty,spetz911/dotty,sjrd/dotty,spetz911/dotty,sjrd/dotty,VladimirNik/dotty,som-snytt/dotty,dotty-staging/dotty,yusuke2255/dotty,lampepfl/dotty,yusuke2255/dotty,vsalvis/dotty,folone/dotty,auvik/dotty,reactormonk/dotty,svalaskevicius/dotty,dotty-staging/dotty,lampepfl/dotty,reactormonk/dotty,densh/dotty,som-snytt/dotty,som-snytt/dotty,svalaskevicius/dotty,angi2/dotty,densh/dotty,sjrd/dotty,auvik/dotty,dotty-staging/dotty,som-snytt/dotty,sjrd/dotty,vsalvis/dotty,lampepfl/dotty,sjrd/dotty,dotty-staging/dotty,VladimirNik/dotty,som-snytt/dotty,folone/dotty,lampepfl/dotty,lampepfl/dotty