Fix Transitions

[flyck]

Transitions still lead to buggy behavior:

• theme toggle no longer works after one transition
• tweet theme sync (tweet style respects theme style)
• hamburger menu broke on mobile

[flyck]

This tip here might make it work for us: https://swup.js.org/getting-started/reloading-javascript/

[flyck]

Probably can be fixed by catching the page-load event like so: https://github.com/efosao/astro-test/blob/main/src/scripts/index.ts