Fixes layout of nodes with YGDisplayNone and YGPositionTypeAbsolute (#1068)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1068

There is an issue in react-native when the Yoga node position type is set to absolute and display: none is set where the node layout calculation gives the absolute dimensions, rather than the expected 0 x 0.

Here are some OSS issues tracking this:
https://github.com/facebook/react-native/issues/18415
https://github.com/microsoft/react-native-windows/issues/7289

## Changelog

[General] [Fix] - Fixes layout of nodes with YGDisplayNone and YGPositionTypeAbsolute

Reviewed By: Andrey-Mishanin

Differential Revision: D26849307

fbshipit-source-id: 197618aa3c4e1b3b7efeba7ea4efd30b2d1c982d

gentest/fixtures/YGDisplayTest.html

@@ -25,3 +25,7 @@
  <div style="flex-grow: 1;"></div>
  <div style="flex-grow: 1; display:none; top: 10px;"></div>
 </div>
+
+<div id="display_none_with_position_absolute" style="width: 100px; height: 100px;">
+  <div style="display:none; position: absolute; width: 100px; height: 100px"></div>
+</div>

gentest/gentest.js

@@ -41,11 +41,11 @@ function assert(condition, message) {
 
 function printTest(e, LTRContainer, RTLContainer, genericContainer) {
   e.push([
-    '/**',
+    '/*',
     ' * Copyright (c) Facebook, Inc. and its affiliates.',
     ' *',
-    ' * 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.',
     ' */',
     '// @Generated by gentest/gentest.rb from gentest/fixtures/' + document.title + '.html',
     '',

gentest/gentest.rb

@@ -7,13 +7,14 @@
 require 'watir'
 require 'fileutils'
 
-caps = Selenium::WebDriver::Remote::Capabilities.chrome(
-  "loggingPrefs"=>{
-    "browser"=>"ALL",
-    "performance"=>"ALL"
-  }
-)
-browser = Watir::Browser.new(:chrome, :desired_capabilities => caps, :switches => ['--force-device-scale-factor=1', '--window-position=0,0'])
+browser = Watir::Browser.new(:chrome, "goog:loggingPrefs" => {
+    "browser" => "ALL",
+    "performance" => "ALL"
+  },
+  "chromeOptions" => {
+    "w3c" => "false"
+  },
+  :switches => ['--force-device-scale-factor=1', '--window-position=0,0'])
 
 Dir.chdir(File.dirname($0))