>> > This updates heex-ts-mode to use font-lock-string-face to be consistent
>> > with html-ts-mode on attribute values.
>>
>> Should we install this change on master or emacs-30? Eli, Yuan, WDYT?
>
> Are we all in agreement with the change itself? Why should an
> attribute be highlighted as a string?

It's the value of an attribute as in <div attribute="attribute_value">. It matches html-ts-mode which I believe is more correct.