New J2K: do not print qualified names if corresponding qualifier can unambiguously resolved

This speeds up shortening qualified references phase

nj2k/testData/newJ2k/issues/kt-19296.kt

@@ -1,3 +1,5 @@
+import A.I
+
 open class A {
     interface I {
         fun f()
@@ -6,5 +8,5 @@ open class A {
 
 class B : A()
 class Test {
-    var z: A.I? = null
+    var z: I? = null
 }

nj2k/testData/newJ2k/issues/kt-24677.kt

@@ -1,5 +1,7 @@
+import Foo.SomeClass
+
 internal interface FooInterface {
-    fun foo(): ArrayList<out Foo.SomeClass?>?
+    fun foo(): ArrayList<out SomeClass?>?
 }
 
 class Foo : FooInterface {