method reference: enable constructor refs completion (IDEA-124541)

java/java-tests/testData/codeInsight/completion/smartType/ConstructorRef-out.java

@@ -0,0 +1,14 @@
+@FunctionalInterface
+interface Foo9 {
+  Bar test(int p);
+}
+
+class Bar {
+  public Bar(int p) {}
+}
+
+class Test88 {
+  void foo(Foo9 foo) {
+    foo(Bar::new<caret>);
+  }
+}

java/java-tests/testData/codeInsight/completion/smartType/ConstructorRef.java

@@ -0,0 +1,14 @@
+@FunctionalInterface
+interface Foo9 {
+  Bar test(int p);
+}
+
+class Bar {
+  public Bar(int p) {}
+}
+
+class Test88 {
+  void foo(Foo9 foo) {
+    foo(Bar::<caret>);
+  }
+}