Auto merge of #22771 - MaT1g3R:refactor_follow_hyperlink, r=jdm

Refactor follow_hyperlink and its callers

Now they follow the new spec stated at:
https://html.spec.whatwg.org/multipage/links.html#following-hyperlinks-2

It seems like choosing a browsing context is already done in the
follow_hyperlink method, so I have removed the TODO in
activation_behavior for HTMLAreaElement.

The tests in `tests/wpt/web-platform-tests/html/semantics/links/following-hyperlinks/`
pass in release builds, but still don't pass in dev build,
since the timeout in
`tests/wpt/web-platform-tests/html/semantics/links/following-hyperlinks/activation-behavior.window.js`
seems to be too short for dev builds.

Navigating to error page on failed URL parsing is still not implemented.

There seem to be potential code duplication in activation_behavior
methods for both htmlanchorelement.rs and htmlareaelement.rs, in:

    let referrer_policy = match self.RelList().Contains("noreferrer".into()) {
        true => Some(ReferrerPolicy::NoReferrer),
        false => None,
    };

I didn't pull them out to a separate function since I don't know
where I would put that new function.

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