Add auto-expand `<details>` for find-in-page and fragment navigations

[Malvoz]

Support data suggestion for "Auto-expand <details> elements for find-in-page and fragment navigations": whatwg/html@0050553.

• Chromium (shipped in v97): https://chromestatus.com/feature/5032469667512320
• WebKit: https://bugs.webkit.org/show_bug.cgi?id=228843
• Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1724299