DS fixes and updates

[jossmac]

Some things I noticed while integrating with Keystone.

Updates:

• Support "isPending" prop on Button
• Support "low" prominence Checkbox
• Emphasise "selected" state on ActionButton
• More prominent ActionBar
• Increase TextArea min-height to 3 lines

Fixes:

• Allow "focus" method on Picker ref
• Defensive "current" selector on NavItem styles
• Fix text truncation on Picker selected text
• Clear slots of Content children—resolves issue with Calendar elements within Dialog receiving incorrect props
• Fix issue with Tray when "size" provided to Dialog component

[changeset-bot]

🦋 Changeset detected

Latest commit: 2fd964e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 14 packages

Name	Type
@keystar/ui	Patch
@keystar/docs	Patch
@example/next-app	Patch
@example/next-pages	Patch
keystatic-docs	Patch
@keystatic/core	Patch
@example/astro-content	Patch
@example/astro	Patch
@example/localization	Patch
@example/next-block-builder	Patch
@keystatic/remix-test-app	Patch
@keystatic/templates-astro	Patch
@keystatic/templates-nextjs	Patch
@keystatic/templates-remix	Patch

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[emmatown]

This doesn't seem right, forwardedRef is already being passed to FieldPrimitive? And what is being focused here? I assume not the trigger button since then overriding it here wouldn't change anything right? Also, not sure about spreading an HTMLElement like this since i think lots of methods wouldn't work since the this wouldn't be right + it would unnecessarily evaluate a bunch of getters, maybe something like this might make sense?

useImperativeHandle(forwardedRef, () => ({
  get trigger() {
    return triggerRef.currrent;
  },
  focus() {
    state.setFocused(true);
  },
}));

[jossmac]

I'll remove this from the PR and we can revisit later 👍

[jossmac]

A bit of context: Internally, spectrum packs and unpacks refs with useDOMRef, which lets them target the focusable element. I'd like to avoid that awkwardness but may have been a bit hasty in my implementation.