new inference: avoid inferring partly raw types (in case of unchecked conversion resolve to eq/low bound or null if only upper is present) as these types won't be treated as wildcard parameterized ever (IDEA-150167)

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

@@ -0,0 +1,26 @@
+
+
+import java.util.*;
+
+
+class Test2 {
+  {
+    System.out.println(Optional.of(new Either())
+                         .map(either -> Test2.foo(either))
+                         .orElse("Hello"));
+    Optional.of(new Either())
+      .map(either -> Test2.foo(either))
+      .orElse("Hello");
+
+    System.out.println(Optional.of(new Either())
+                         .map(Test2::foo)
+                         .orElse("Hello"));
+    Optional.of(new Either())
+      .map(Test2::foo)
+      .orElse("Hello");
+  }
+
+  private static <X extends Exception, A> A foo(Either<X, A> either) throws X { return null; }
+}
+
+class Either<L, R> { }