Protect electron PLV in AT
Following !27607 (merged), add a couple of protections to prevent the PLV iso tool from crashing on missing electron auxvars.
Also change static ConstAccessor to static const ConstAccessor everywhere in AT packages.
Following !27607 (merged), add a couple of protections to prevent the PLV iso tool from crashing on missing electron auxvars.
Also change static ConstAccessor to static const ConstAccessor everywhere in AT packages.