Hide Cart and Checkout blocks from the widget editor

[Aljullu]

Closes #4190.
Closes #4191.

After some more discussion (pca54o-1pT-p2#comment-1929) we decided to hide the Cart block and Checkout blocks from the widget editor. In the future we will have a 'Minicart block' (#4138) which will serve the use-case of showing the cart contents in a widget area. Regarding the Checkout block, we don't see any use-case for it in a widget area.

How to test the changes in this Pull Request:

1. Using a classic theme (ie: Storefront) with Gutenberg enabled, go to Appearance > Widgets.
2. Verify you can't add the Cart block or the Checkout block. (You will see a widget called Cart, that's the widget from WC core and is not related to this PR, so ignore it).
3. Now go to Appearance > Customize > Widgets and open a widget area.
4. Verify you can't add the Cart block or the Checkout block either.

Changelog

Hide the Cart and Checkout blocks from the new block-based widget editor.

[github-actions]

Size Change: 0 B

Total Size: 986 kB

ℹ️ View Unchanged

Filename	Size	Change
build/active-filters-frontend.js	7.98 kB	0 B
build/active-filters.js	7.53 kB	0 B
build/all-products-frontend.js	34.7 kB	0 B
build/all-products.js	36.5 kB	0 B
build/all-reviews.js	9.15 kB	0 B
build/atomic-block-components/add-to-cart--atomic-block-components/button--atomic-block-components/image---a7e2bb9b.js	2.39 kB	0 B
build/atomic-block-components/add-to-cart--atomic-block-components/button.js	1.95 kB	0 B
build/atomic-block-components/add-to-cart--atomic-block-components/image--atomic-block-components/title.js	334 B	0 B
build/atomic-block-components/add-to-cart-frontend.js	8.75 kB	0 B
build/atomic-block-components/add-to-cart.js	7.8 kB	0 B
build/atomic-block-components/button-frontend.js	1.73 kB	0 B
build/atomic-block-components/button.js	844 B	0 B
build/atomic-block-components/category-list-frontend.js	469 B	0 B
build/atomic-block-components/category-list.js	478 B	0 B
build/atomic-block-components/image-frontend.js	1.66 kB	0 B
build/atomic-block-components/image.js	1.3 kB	0 B
build/atomic-block-components/price-frontend.js	1.98 kB	0 B
build/atomic-block-components/price.js	2.01 kB	0 B
build/atomic-block-components/rating-frontend.js	521 B	0 B
build/atomic-block-components/rating.js	525 B	0 B
build/atomic-block-components/sale-badge-frontend.js	470 B	0 B
build/atomic-block-components/sale-badge.js	474 B	0 B
build/atomic-block-components/sku-frontend.js	389 B	0 B
build/atomic-block-components/sku.js	393 B	0 B
build/atomic-block-components/stock-indicator-frontend.js	569 B	0 B
build/atomic-block-components/stock-indicator.js	572 B	0 B
build/atomic-block-components/summary-frontend.js	906 B	0 B
build/atomic-block-components/summary.js	910 B	0 B
build/atomic-block-components/tag-list-frontend.js	464 B	0 B
build/atomic-block-components/tag-list.js	472 B	0 B
build/atomic-block-components/title-frontend.js	1.41 kB	0 B
build/atomic-block-components/title.js	1.26 kB	0 B
build/attribute-filter-frontend.js	17.7 kB	0 B
build/attribute-filter.js	11.4 kB	0 B
build/blocks-checkout-editor.js	10.4 kB	0 B
build/blocks-checkout.js	19.6 kB	0 B
build/blocks.js	3.51 kB	0 B
build/cart-frontend.js	77.7 kB	0 B
build/cart.js	44.2 kB	0 B
build/checkout-frontend.js	81.8 kB	0 B
build/checkout.js	46.5 kB	0 B
build/editor-rtl.css	14.9 kB	0 B
build/editor.css	14.9 kB	0 B
build/featured-category.js	7.23 kB	0 B
build/featured-product.js	9.4 kB	0 B
build/handpicked-products.js	5.89 kB	0 B
build/price-filter-frontend.js	14.2 kB	0 B
build/price-filter.js	9.3 kB	0 B
build/price-format.js	1.37 kB	0 B
build/product-best-sellers.js	6.12 kB	0 B
build/product-categories.js	3.24 kB	0 B
build/product-category.js	6.99 kB	0 B
build/product-new.js	6.28 kB	0 B
build/product-on-sale.js	6.62 kB	0 B
build/product-search.js	2.56 kB	0 B
build/product-tag.js	6.1 kB	0 B
build/product-top-rated.js	6.26 kB	0 B
build/products-by-attribute.js	7.22 kB	0 B
build/reviews-by-category.js	11.2 kB	0 B
build/reviews-by-product.js	12.7 kB	0 B
build/reviews-frontend.js	8.94 kB	0 B
build/single-product-frontend.js	38.1 kB	0 B
build/single-product.js	9.65 kB	0 B
build/style-rtl.css	18.8 kB	0 B
build/style.css	18.8 kB	0 B
build/vendors--atomic-block-components/price-frontend.js	6.54 kB	0 B
build/vendors-style-rtl.css	1.05 kB	0 B
build/vendors-style.css	1.05 kB	0 B
build/vendors.js	242 kB	0 B
build/wc-blocks-data.js	10.6 kB	0 B
build/wc-blocks-google-analytics.js	1.99 kB	0 B
build/wc-blocks-middleware.js	1.48 kB	0 B
build/wc-blocks-registry.js	2.74 kB	0 B
build/wc-payment-method-bacs.js	812 B	0 B
build/wc-payment-method-cheque.js	807 B	0 B
build/wc-payment-method-cod.js	903 B	0 B
build/wc-payment-method-paypal.js	844 B	0 B
build/wc-payment-method-stripe.js	12.4 kB	0 B
build/wc-settings.js	2.93 kB	0 B
build/wc-shared-context.js	1.54 kB	0 B
build/wc-shared-hocs.js	1.73 kB	0 B

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[ralucaStan]

Works as expected 👏

[jeffpaul]

@Aljullu @ralucaStan we got a report related to this in WordPress core, see here. Could you confirm if what Olga Gleckler reported in WP Core is in fact intended as a result from this PR or not?

[Aljullu]

Thanks for the ping @jeffpaul, I answered directly in the ticket. The issues were not related to this PR but instead to this two: #3626 and #4362. The first one is fixed and the second one currently under our radar.