HTML API: Add missing NOBR end tag handling

[sirreal]

The NOBR end tag handling seems to have been omitted for this part of the HTML standard:

An end tag whose tag name is one of: "a", "b", "big", "code", "em", "font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u"
Run the adoption agency algorithm for the token.

This does not seem to be intentional. Introduced in [56274].

Trac ticket:

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[sirreal]

@dmsnell Have a look at this please, it seems to be an unintentional omission to me.

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[dmsnell]

Great catch. Thankfully this is for the deprecated NOBR element, so its impact should have been minimal. I don't think it warrants any new tickets or notes, as it's a minor bug fix. Thank you!

[dmsnell]

Merged in [58967]
d46466f