Apple has generally done a great job of keeping its built-in iOS apps up to date—with the YouTube app a glaring exception to this rule. Barely updated since its debut on the original iPhone in 2007, it has long since been surpassed by the video sharing giant’s own mobile website—yet iOS is still set to open all YouTube videos in the native app. Luckily, there’s an easy way to get around this limitation. Simply fire up Settings,…