Add type="button" to all buttons

[wojtekmaj]

Reduces the noise coming from Microsoft Edge "Issues" tab in DevTools:

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Name	Status	Preview	Comments	Updated
ladle	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Mar 22, 2023 at 5:49PM (UTC)

[tajo]

That's a strange tip. It should not matter unless you put button into form?

[wojtekmaj]

I guess it's mostly "better be explicit at all times than be surprised later when something changes around the already-implemented button". Tip links to this article:

https://webhint.io/docs/user-guide/hints/hint-button-type/