Use package name of AbortController polyfill in whitelisted dependencies

This ensures that polyfill will be listed in `dist/package.json`'s `dependencies`
at build, and then properly installed in FastBoot application server.

package.json

@@ -68,6 +68,7 @@
     "configPath": "tests/dummy/config",
     "fastbootDependencies": [
       "node-fetch",
+      "abortcontroller-polyfill",
       "abortcontroller-polyfill/dist/cjs-ponyfill"
     ]
   }