Remove unnecessary classes from inline code tags

[kfranqueiro]

This removes classes from code elements that appear inline within prose.

These classes have no effect, and based on local testing, it would be unrealistic to expect highlight.js to provide meaningful syntax highlighting in the vast majority of these cases due to insufficient context. See #4611 (comment) for more details.

I have looked over this changeset and also ran screenshot diffs; this causes no visible changes.

I did not use global find/replace to perform these changes, since it would be non-trivial to make that skip <pre ...>...<code class="..."> cases, which this intentionally leaves intact. Instead, I made a script using cheerio (the same library the build system uses for transforms):

import { load } from "cheerio";
import { readFile, writeFile } from "fs/promises";
import { glob } from "glob";

/** Extracts body to avoid causing unrelated formatting changes */
const getBody = (html) => html.replace(/[\s\S]*<body[^>]*>/, "").replace(/<\/body>[\s\S]*/, "");

for (const path of await glob(["techniques/**/*.html", "understanding/**/*.html", "working-examples/**/*.html"])) {
  const content = await readFile(path, "utf8");
  const $ = await load(getBody(content), null, false);
  const inlineCodeWithClass$ = $("code[class]:not(:is(pre code))");
  console.log(path, inlineCodeWithClass$.length);
  inlineCodeWithClass$.each((_, el) => $(el).removeAttr("class"));
  await writeFile(path, content.replace(/(<body[^>]*>)[\s\S]*<\/body>/, `$1${$.html()}</body>`));
}

This script resulted in some unrelated changes due to the underlying parse5 library sanitizing HTML. I went through the changeset and backed out any unrelated changes I could find, so this should only include class="..." removals within inline <code> tags.

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[iadawn]

I trust that the 231 files are fine! :)