Revert autocomplete close on input click (#120) and fix placeholder interaction

[aurorascharff]

Describe your changes

Opplevde problemer med forrige commits feaure. Fant en annen feil i prosessen: Placeholder-logikken er kopiert fra select der det ikke finnes "placeholder" fordi det brukes buttons. Derfor kunne vi endre placeholder-logikk i denne komponenten.

Checklist before requesting a review

• [x] I have performed a self-review and test of my code
• [x] I have added label to the PR (major, minor or patch)
• [ ] If new component: Is story for component created in stories-folder?
• [ ] If new component: Is tsx-file import added to packages/react/index.tsx?
• [ ] If new component: Is css-file added to packages/css/index.css?

[github-actions[bot]]

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