override/implement completion: show short types, not raw (IDEA-CR-19511)

java/java-tests/testData/codeInsight/completion/normal/ImplementViaCompletionWithGenerics.java

@@ -0,0 +1,13 @@
+import java.util.List;
+
+class Foo implements Bar {
+  methW<caret>
+
+
+}
+
+interface Bar {
+  <K> void methodWithTypeParam(K k);
+  void methodWithGenerics(List<String> k);
+}
+