[FIRRTL] AdvancedLayerSink: don't sink instances of mods with port annos #7982
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… annos If a module-like has port annotations, mark it as containing an effect, which will prevent the pass from moving or deleting its instances later on.
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If a module-like has port annotations, mark it as an effectful module, which will prevent the pass from moving or deleting its instances later on. We can't sink instance when we don't understand what port annotations mean.