Fix [45277]: Invalid breadcrumb module json-ld output

[weeblr]

Pull Request for Issue # 45277.

Summary of Changes

Changed JSON-LD output of breadcrumb module to be compliant with Google specification

Testing Instructions

Actual result BEFORE applying this Pull Request

Joomla breadcrumb module outputs something similar to:

{
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "@id": "https://example.com/#/schema/BreadcrumbList/17",
    "itemListElement": [
        {
            "@type": "ListItem",
            "position": 1,
            "item": {
                "@id": "https://example.com/",
                "name": "Home"
            }
        },
        {
            "@type": "ListItem",
            "position": 2,
            "item": {
                "@id": "https://example.com/blog/",
                "name": "Blog"
            }
        },
        {
            "@type": "ListItem",
            "position": 3,
            "item": {
                "name": "Article T6"
            }
        }
    ]
}

Expected result AFTER applying this Pull Request

Valid json-ld is similar to:

{
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "@id": "https://example.com/#/schema/BreadcrumbList/17",
    "itemListElement": [
        {
            "@type": "ListItem",
            "position": 1,
            "name": "Home",
            "item": "https://example.com/"
        },
        {
            "@type": "ListItem",
            "position": 2,
            "name": "Blog",
            "item": "https://example.com/blog/"
        },
        {
            "@type": "ListItem",
            "position": 3,
            "name": "Article T6"
        }
    ]
}

The change is in the details of each ListItem:

Bad:

{
"@type": "ListItem",
"position": 2,
"item": {
"@id": "https://example.com/blog/",
"name": "Blog"
}
},

Good:

{
"@type": "ListItem",
"position": 2,
"name": "Blog",
"item": "https://example.com/blog/"
},

Ref: https://developers.google.com/search/docs/appearance/structured-data/breadcrumb

Documentation Changes Required