[ActionMenu] Removed defaultOpen-prop, moved rootElement, added Modal-support

[KenAJoh]

Description

Hide whitespace for better diff-view

• Se no current use for defaultOpen, so removed it
• Moved rootElement to "root" to avoid having to declare it multiple times
• Now re-uses same logic found in Tooltip where Modal-ref is used as rootElement when used inside Modal

Component Checklist 📝

• JSDoc
• Examples
• Documentation
• Storybook
• Style mappings (@navikt/core/css/config/_mappings.js)
• Component tokens (@navikt/core/css/tokens.json)
• CSS class deprecations (@navikt/aksel-stylelint/src/deprecations.ts)
• Exports (@navikt/core/react/src/index.ts and @navikt/core/react/package.json)
• New component? CSS import (@navikt/core/css/index.css)
• Breaking change? Update migration guide. Consider codemod.
• Changeset (Format: <Component>: <gitmoji?> <Text>. E.g. "Button: ✨ Add feature xyz.")

[changeset-bot]

⚠️ No Changeset found

Latest commit: 1c55c9c

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

Storybook demo

bbbe5e8a9 | 91 komponenter | 144 stories

[HalvorHaugan]

Came to think of that a benefit of rootElement: MenuPortalProps["rootElement"] in ActionMenuContextValue is that it would make the prop mandatory (can still be undefined, but you cannot exclude it completely)

[KenAJoh]

Came to think of that a benefit of rootElement: MenuPortalProps["rootElement"] in ActionMenuContextValue is that it would make the prop mandatory (can still be undefined, but you cannot exclude it completely)

Thats true, i changed that instance to declare rootElement manually. Since its a context, there i no need to replicate the jsDoc either.