Add outer param when java inner class instantiated

Author: changvvb

compiler/src/dotty/tools/dotc/transform/ExplicitOuter.scala

@@ -247,7 +247,7 @@ object ExplicitOuter {
 
   /** Class constructor takes an outer argument. Can be called only after phase ExplicitOuter. */
   def hasOuterParam(cls: ClassSymbol)(using Context): Boolean =
-    !cls.is(Trait) && needsOuterIfReferenced(cls) && outerAccessor(cls).exists
+    !cls.is(Trait) && needsOuterIfReferenced(cls)
 
   /** Tree references an outer class of `cls` which is not a static owner.
    */

tests/run/10838/A.java

@@ -0,0 +1,3 @@
+public class A {
+  public class B {}
+}

tests/run/10838/Test.scala

@@ -0,0 +1,6 @@
+object Test {
+  def main(args: Array[String]): Unit = {
+    val a = new A
+    new a.B
+  }
+}