Auto merge of #156228 - Bryanskiy:eff_vis_iter_late, r=petrochenkov

Privacy: try use queue instead of fixed-point iteration



Earlier: iterate until updates of `EffectiveVisibility` occur.

Now:  if an update occurs, then we put in the queue those items that may be affected by this update. Iterate until there are items in the queue.

r? @petrochenkov