fix(local_names): add missing ARIA attributes

[nolanlawson]

As part of implementing ARIAMixin (servo/servo#32079), it seems that, as a first step, html5ever would need to update its list of ARIA attributes in local_names.txt to correspond to those defined in ARIAMixin.

(If html5ever does not have these attributes defined in local_names.txt, then changes to element.rs such as this fail to compile.)

This PR adds the missing ARIA attributes:

• aria-braillelabel
• aria-brailleroledescription
• aria-colcount
• aria-colindex
• aria-colindextext
• aria-colspan
• aria-current
• aria-description
• aria-details
• aria-errormessage
• aria-keyshortcuts
• aria-label
• aria-modal
• aria-orientation
• aria-placeholder
• aria-roledescription
• aria-rowcount
• aria-rowindex
• aria-rowindextext
• aria-rowspan
• aria-valuetext

However, I did not remove the currently-defined ARIA attributes which are not available in ARIAMixin:

• aria-channel
• aria-datatype
• aria-dropeffect
• aria-grab
• aria-relevant
• aria-secret
• aria-templateid

I assume these are deprecated/nonstandard, but I don't see a strong reason to remove them since I'm not sure if any downstream code is relying on them. (Update: it turns out the WPT tests still reference aria-relevant.)

BTW I did not find any tests for the existing aria-* attributes, but I'd be happy to add them as necessary.