lambda constraints: proceed with return expressions (IDEA-175426)

lambda with formal types won't lead to additional constraint after return type constraint processing, thus it need to be processed additionally

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/LambdaWithFormalTypeParameters.java

@@ -0,0 +1,20 @@
+
+import java.io.IOException;
+import java.util.Optional;
+
+class GenericClass {
+  <E extends Throwable> void build(Test<E, Optional<Integer>> test) { }
+
+  {
+    build((IOException ex) ->  returnOptional());
+  }
+
+  private static <T> Optional<T> returnOptional() {
+    return null;
+  }
+
+  @FunctionalInterface
+  interface Test<E, T> {
+    T evaluate(E ex);
+  }
+}