[json-ld] allow script tag to have attributes

[BaDos]

The frontend part can manipulate ld+json data, for example, add a rating, etc.
To correctly define a tag, we need to assign it a name, for example, like this - data-name="product".

Our overlay returns a tag with such an attribute: <script type="application/ld+json" data-name="product">

But after merging data from the overlay, this attribute is deleted.

We need the ability to keep attributes from the overlay.