closes https://linear.app/tryghost/issue/IPC-117/fix-ghost-orb-logo-not-being-animated-in-chrome-or-arc
- Chrome wasn't respecting the `muted` attribute when the dashboard is loaded without any interaction resulting in the video not auto playing
- fixed by adding a `{{autoplay}}` modifier that explicitly sets the `muted` property on the video before calling `.play()` which appears to bypass the interaction-required block
