Uast: type-mapper checks deeper for local classes (KT-21546, EA-100195)

plugins/uast-kotlin/testData/BrokenMethod.kt

@@ -0,0 +1,10 @@
+fun main(args: Array<String>) { // Error
+
+    data class TestUsed(val parameter: CharSequence) {
+        private data class Used(val parameter: Any) {
+            companion object {
+                fun Any.doStuff1() = Used(this)
+            }
+        }
+    }
+}