[DescriptionList] Replace spacing prop with gap

[yurm04]

WHY are these changes introduced?

Fixes #10002

Moving to the gap prop for consistency

WHAT is this pull request doing?

• remove spacing and replace with gap
• update story to reflect prop change

How to 🎩

🖥 Local development instructions
🗒 General tophatting guidelines
📄 Changelog guidelines

Copy-paste this code in playground/Playground.tsx:

import React from 'react';
import {Page} from '../src';

export function Playground() {
  return (
    <Page title="Playground">
      {/* Add the code you want to test in here */}
    </Page>
  );
}

🎩 checklist

• Tested on mobile
• Tested on multiple browsers
• Tested for accessibility
• Updated the component's README.md with documentation changes
• Tophatted documentation changes in the style guide

[kyledurand]

I think we should err on the side of caution for now and deprecate these older props but have them do the same things. Can you leave the spacing prop but deprecate it?

[sam-b-rose]

Can you leave the spacing prop but deprecate it?

Agreed. Should we add the @deprecated in a PR to main? We should be able to remove spacing in v12

[github-actions]

Hi! We noticed there hasn’t been activity on this PR in a while. After 30 days, it will close automatically.

If it’s still relevant, or you have updates, comment and let us know. And don’t worry, you can always re-open later if needed.

[translation-platform]

Localization quality issue found

The following issues may affect the quality of localized translations if they are not addressed:

• The value Read-only for key Polaris.Badge.STATUS_LABELS.readOnly is very short. Short strings are more likely to be misunderstood by translators without context. Please provide additional context for the translators if possible.

Please look out for other instances of this issue in your PR and fix them as well if possible.

Questions about these messages? Hop in the #help-localization Slack channel.

[translation-platform]

Localization quality issue found

The following issues may affect the quality of localized translations if they are not addressed:

• The value Enabled for key Polaris.Badge.STATUS_LABELS.enabled is very short. Short strings are more likely to be misunderstood by translators without context. Please provide additional context for the translators if possible.

Please look out for other instances of this issue in your PR and fix them as well if possible.

Questions about these messages? Hop in the #help-localization Slack channel.

[translation-platform]

Localization quality issue found

The following issues may affect the quality of localized translations if they are not addressed:

• The value Dismiss notification for key Polaris.Banner.dismissButton is very short. Short strings are more likely to be misunderstood by translators without context. Please provide additional context for the translators if possible.

Please look out for other instances of this issue in your PR and fix them as well if possible.

Questions about these messages? Hop in the #help-localization Slack channel.