Update react-devtools-core to 3.6.3 to fix React Inspector

Summary:
It appears that Electron (or the version of Chromium it uses) has a bug that causes a `webview` process to crash if `URL.createObjectURL` is used.

Before releasing `react-devtools-core` 3.5.0, we updated Webpack and the loaders we used. Apparently the version of `style-loader` we now use makes use of the `URL.createObjectURL` API for CSS source maps. This triggers the `webview` crash I mentioned above.

The fix for this is to disable CSS source maps, in which case the loader just uses a `<style>` tag. This diff updates Nuclide to pull in this fixed version.

Reviewed By: bestander

Differential Revision: D16518772

fbshipit-source-id: a779b7d310f869793fa05988d138ce6a46840d8c

Author: Brian Vaughn

package.json

@@ -107,7 +107,7 @@
     "pretty-format": "^24.7.0",
     "promise": "^7.1.1",
     "prop-types": "^15.7.2",
-    "react-devtools-core": "^3.6.2",
+    "react-devtools-core": "^3.6.3",
     "react-refresh": "^0.3.0",
     "regenerator-runtime": "^0.13.2",
     "scheduler": "0.14.0",

yarn.lock

@@ -5944,10 +5944,10 @@ react-deep-force-update@^1.0.0:
   resolved "https://registry.yarnpkg.com/react-deep-force-update/-/react-deep-force-update-1.1.2.tgz#3d2ae45c2c9040cbb1772be52f8ea1ade6ca2ee1"
   integrity sha512-WUSQJ4P/wWcusaH+zZmbECOk7H5N2pOIl0vzheeornkIMhu+qrNdGFm0bDZLCb0hSF0jf/kH1SgkNGfBdTc4wA==
 
-react-devtools-core@^3.6.2:
-  version "3.6.2"
-  resolved "https://registry.yarnpkg.com/react-devtools-core/-/react-devtools-core-3.6.2.tgz#7d425f160c5928129fa9acdbdd9e80a334e09c8d"
-  integrity sha512-a5r2Er0PajtlvKYBUKzB3vW5qek8TbgQWwRruDEwTm3VnqVffHmnvApRil/lfkAa8ghXcESNizrtKu/18oG55Q==
+react-devtools-core@^3.6.3:
+  version "3.6.3"
+  resolved "https://registry.yarnpkg.com/react-devtools-core/-/react-devtools-core-3.6.3.tgz#977d95b684c6ad28205f0c62e1e12c5f16675814"
+  integrity sha512-+P+eFy/yo8Z/UH9J0DqHZuUM5+RI2wl249TNvMx3J2jpUomLQa4Zxl56GEotGfw3PIP1eI+hVf1s53FlUONStQ==
   dependencies:
     shell-quote "^1.6.1"
     ws "^3.3.1"