Tweak maybeChild test

Use originDenotation of children instead of going back to typerPhase

Author: odersky

compiler/src/dotty/tools/dotc/core/SymDenotations.scala

@@ -1589,9 +1589,9 @@ object SymDenotations {
         // If owner is a package, we complete only
         // children that are defined in the same file as their parents.
         def maybeChild(sym: Symbol) =
-          (sym.isClass && !this.is(JavaDefined) || sym.is(EnumVal))
+          (sym.isClass && !this.is(JavaDefined) || sym.originDenotation.is(EnumVal))
           && !owner.is(Package)
-             || sym.infoOrCompleter.match
+             || sym.originDenotation.infoOrCompleter.match
                   case _: SymbolLoaders.SecondCompleter => sym.associatedFile == this.symbol.associatedFile
                   case _ => false
 
@@ -1605,10 +1605,8 @@ object SymDenotations {
           // Make sure all visible children are completed, so that
           // they show up in Child annotations. A possible child is visible if it
           // is defined in the same scope as `cls` or in the companion object of `cls`.
-          inContext(ctx.withPhase(ctx.typerPhase)) {
-            completeChildrenIn(owner)
-            completeChildrenIn(companionClass)
-          }
+          completeChildrenIn(owner)
+          completeChildrenIn(companionClass)
           setFlag(ChildrenQueried)
 
       annotations.collect { case Annotation.Child(child) => child }.reverse