Upgrade fbjni

Summary:
Sync fbjni with `libaries/fbjni`.

This includes a hack to fix a deadlock we found for cmake-debug variants only. This still gets us back in sync with other fbjni consumers which is going to save us trouble in the future if Yoga ever wants to make use of a newer feature.

Manual changes made in addition to the hand-crafted CMakeLists and cxx buck rules:

- `jni::isObjectRefType` has SDK lookup disabled.
- `fbjni/` path is changed back to `fb/` to retain compatibility with Yoga.

Reviewed By: priteshrnandgaonkar

Differential Revision: D8531991

fbshipit-source-id: 776f519e2e5f9bea37f55990348f7ed81c4860b4

ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNI.cpp

@@ -1,10 +1,10 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
+/*
+ *  Copyright (c) 2014-present, Facebook, Inc.
+ *
+ *  This source code is licensed under the MIT license found in the LICENSE
+ *  file in the root directory of this source tree.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
  */
-
 #include <fb/fbjni.h>
 #include <yoga/YGNode.h>
 #include <yoga/Yoga.h>