Page load improvements

[liamcmitchell]

Minor performance improvements and refactoring.

• remove mix compile --force from asset build watch script
• styling
  • set apple-os class in inline_html.js
  • remove non-apple-os class, replace with :not(.apple-os) selector
  • update isAppleOs() helper to query this class for source of truth
• content
  • replace fixLinks() & .no-underline with CSS-only :has(code, img) selector
  • remove fixSpacebar(), there is no need to focus content to enable keybinds
  • inline and refactor setLivebookBadgeUrl() - the only remaining code
• copy-button
  • optimise button HTML, remove unneeded attrs, replace span.sr-only with appropriate attrs on svg
  • replace .insertAdjacentHTML() with .cloneNode() (only parses HTML once)
  • implement array filters in query selectors
• makeup
  • inline many things
  • implement mouseenter/leave callbacks in single function, no need for closures
  • only search parent for matching delimiters
• search-bar
  • remove reading of window.scrollY on init, this forces layout and is not required
  • refactor logic
  • remove scrollThreshold of 70 px, looking at git history and PR comments, this is no longer needed
• tooltips
  • inline HTML, no need for handlebars
  • inline a few functions
  • move filter logic into query selectors
  • remove need for closures in event handlers

Performance improvement is so minor, I can't record it reliably. JS is 0.8kb smaller.

[github-actions]

📦 Docs artifacts are ready: https://github.com/elixir-lang/ex_doc/actions/runs/12609079414/artifacts/2385517815

[josevalim]

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