Update Images for the Product Details Patterns (#9764)

* Update image for the Product Hero pattern.

Replace the Unsplash image with a CCO licensed image from Pxhere.

* Update images for Prod List Gallery Desc pattern

Replace the Unsplash image with a CCO licensed image from Pxhere for the
Product Listing with Gallery and Description pattern.

* Remove unneeded Unsplash images.

* Update copy for Prod Listing Gallery Desc pattern.

* Optimize new image exports.

* Update image for the Product Listing pattern.

Replace the Unsplash image with a CCO licensed image from Pxhere.

* Update images for Product Details pattern.

Replace the Unsplash images with CCO licensed images from Pxhere.

* Remove unneeded Unsplash image.

* Use Relative URLs for Images in the Product Listing Pattern

This commit replaces hardcoded URLs with dynamic ones for image placeholders in the `product-listing-with-gallery-and-description.php` pattern file.

- The `plugins_url()` function is now used to generate URLs, which correctly points to the images folder within the WooCommerce Blocks plugin directory. This approach provides better flexibility and portability since it doesn't rely on a specific domain or path. The `esc_url()` function is used to ensure the URL is safe to use in the HTML context.

- The change is made for a total of four images in the pattern.

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Co-authored-by: Manish Menaria <[email protected]>

Author: danielwrobert