don't enter package to owner's scope

Author: liufengyun

src/dotty/tools/dotc/core/Symbols.scala

@@ -428,7 +428,7 @@ object Symbols {
     final def entered(implicit ctx: Context): this.type = {
       assert(this.owner.isClass, s"symbol ($this) entered the scope of non-class owner ${this.owner}") // !!! DEBUG
       this.owner.asClass.enter(this)
-      if (this is Module) this.owner.asClass.enter(this.moduleClass)
+      if (this.is(Module, butNot = Package)) this.owner.asClass.enter(this.moduleClass)
       this
     }
 

src/dotty/tools/dotc/typer/Typer.scala

@@ -126,9 +126,8 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit
      *  case x :: xs in class List would return the :: method).
      */
     def qualifies(denot: Denotation): Boolean =
-      reallyExists(denot) &&
-        !(name.isTypeName && denot.symbol.is(Package)) &&
-        !(pt.isInstanceOf[UnapplySelectionProto] &&
+      reallyExists(denot) && !(
+        pt.isInstanceOf[UnapplySelectionProto] &&
           (denot.symbol is (Method, butNot = Accessor)))
 
     /** Find the denotation of enclosing `name` in given context `ctx`.