Add a default attribute to the pattern if exists

[albarin]

This PRs gets the current attributes in the store and uses the first one (if any) to render the filters by attribute preview and as default in the filters pattern.

Fixes #7190

Screenshots

Before	After

Testing

Automated Tests

• Changes in this PR are covered by Automated Tests.
  • Unit tests
  • E2E tests

User Facing Testing

1. Create a new page or post.
2. Open the block inserter and search for the WooCommerce Product Filters pattern.
3. Check the preview image of the pattern in the inserter and make sure you see one attribute selected and not the "edit" view of the filter by attribute block (see screenshot above).
4. If the store does not have any attributes you should still see the "edit" view though.

• Do not include in the Testing Notes

WooCommerce Visibility

• WooCommerce Core
• Feature plugin
• Experimental

Changelog

WooCommerce Product Filters pattern: improve the preview of the Filter by Attribute block.

[github-actions]

The release ZIP for this PR is accessible via:

https://wcblocks.wpcomstaging.com/wp-content/uploads/woocommerce-gutenberg-products-block-9812.zip

Script Dependencies Report

There is no changed script dependency between this branch and trunk.

This comment was automatically generated by the ./github/compare-assets action.

TypeScript Errors Report

• Files with errors: 466
• Total errors: 2227

🎉 🎉 This PR does not introduce new TS errors.

_{comments-aggregator}

[github-actions]

Size Change: 0 B

Total Size: 1.1 MB

ℹ️ View Unchanged

Filename	Size
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[Aljullu]

Nice improvement, thanks @albarin! LGTM, but one small thought: should we use intval() or esc_attr() instead of esc_html() to print the attribute id? What do you think?

[albarin]

Nice improvement, thanks @albarin! LGTM, but one small thought: should we use intval() or esc_attr() instead of esc_html() to print the attribute id? What do you think?

Sure, you are right, I just pushed the change, thanks!

[Hakenstein]

Show more missing on frontend (Gutenberg Block Editor). Appears in the Widget Dashboard section.

Fix issue "limit" in attribute-filter-wrapper--stock-filter-wrapper-frontend.js

[Aljullu]

Hi there, @Hakenstein, it's not clear to me what exactly you are describing. Would you mind opening a new issue with testing steps so we can investigate it further? Attaching some screenshots would be super helpful. Thanks in advance.