New J2K: handle correctly short names which are imported by default in kotlin (like List or Result)

Kotlin default import inserter was unable to correctly insert such imports

#KT-34165 fixed

nj2k/testData/newJ2k/assignmentExpression/nullability-settings.kt

@@ -1,3 +1,5 @@
+import java.util.HashSet
+
 internal class Foo {
     fun foo(o: HashSet<*>) {
         val o2: HashSet<*> = o