Update array.js formatting

Autoformatted via prettier with settings below, this is so additional polyfill matches can be used to match formatting in future PRs for polyfills, as well as full formatting tooling for .js files.

tabWidth: 4
useTabs: true
singleQuote: true
trailingComma: "es5"
14 jobs for format-array-polyfills in 17 minutes and 10 seconds (queued for 9 seconds)