inference: don't erase inference variables (IDEA-151750)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/graphInference/InferenceVariablesErasure.java

@@ -0,0 +1,21 @@
+interface E {}
+interface F extends E {
+  ArrayFactory<F> ARRAY_FACTORY = null;
+}
+
+interface ArrayFactory<T> {
+  T[] create(int count);
+}
+
+interface Stub<K> {}
+
+class M {
+
+  public F[] get(Stub s) {
+    return foo(s, F.ARRAY_FACTORY);
+  }
+
+  private <T extends E> T[] foo(Stub<T> stub, ArrayFactory<T> arrayFactory) {
+    return null;
+  }
+}