Fix stale symbol crash on classes with package owner

Author: jchyb

compiler/src/dotty/tools/dotc/typer/Namer.scala

@@ -712,7 +712,7 @@ class Namer { typer: Typer =>
               enterSymbol(classConstructorCompanion(classSym.asClass))
             else
               for moduleSym <- companionVals do
-                if moduleSym.is(Module) && !moduleSym.isDefinedInCurrentRun then
+                if moduleSym.lastKnownDenotation.is(Module) && !moduleSym.isDefinedInCurrentRun then
                   val companion =
                     if needsConstructorProxies(classSym) then
                       classConstructorCompanion(classSym.asClass)

tests/pos-macros/i20449/Macro.scala

@@ -0,0 +1,3 @@
+import scala.quoted.*
+transparent inline def getTypeInfo[T]() = ${ getTypeInfoImpl[T] }
+def getTypeInfoImpl[T: Type](using ctx: Quotes): Expr[Unit] = '{ () }

tests/pos-macros/i20449/Main.scala

@@ -0,0 +1,6 @@
+
+class Wrapper1[A]
+val a = {
+  getTypeInfo[Any]()
+  val wrapper2 = Wrapper1[Any]()
+}