Add support for 'name' attribute of 'details' block.

[sfadschm]

What problem does this address?

The details block is currently lacking support for its name attribute.

Spec.:
https://html.spec.whatwg.org/multipage/interactive-elements.html

The attribute is supported in all recent browsers (except Firefox, god knows why...):
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/details

While the "accordion-like" functionality supplied by the attribute might be misleading, the details block should still aim to support all HTML attributes defined in the spec, see also #21584 (comment)_.

What is your proposed solution?

Add the "name" attribute to the block settings.

[t-hamano]

Thanks for the report.

#56971 has been submitted to resolve this issue, but as you say, this attribute is not yet supported in Firefox, which is why the PR cannot be merged.

[sfadschm]

Oh, I do not understand how I did not find these in the search, sorry...
Thanks for linking the PR.