chore: update eslint and stylelint configs and re-sync modern-normalize (#38982)

- update the vendored `modern-normalize` to v3.0.1
- require descriptions for lint disables in TS and CSS, same as we
already have in Go.
- disable core rules covered by `regexp/*` and `unicorn/*`, and ones
that cannot fire
- stop applying vitest rules to the playwright files in `tests/e2e`
- enable 7 stylelint rules, mostly `no-unknown` and `no-invalid` checks
- drop 2 unnecessary vendor prefixes (safari v17+, chrome v120+)
- look up ids via `querySelector` with `CSS.escape` instead of
`getElementById`
- remove stale doc about `@ts-expect-error`, it's forbidden
- misc dev doc fixes

Every declaration that `modern-normalize` v3 removes was checked against
chromium, webkit and firefox defaults first. The `hr` color and the
`:-moz-focusring` outline are kept as documented deviations, dropping
those does change rendering.

---------

Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

web_src/js/features/tribute.ts

@@ -32,7 +32,7 @@ export async function attachTribute(element: HTMLElement) {
   };
 
   const mentionCollection: TributeCollection<Mention> = {
-    values: async (_query: string, cb: (matches: Mention[]) => void) => { // eslint-disable-line @typescript-eslint/no-misused-promises
+    values: async (_query: string, cb: (matches: Mention[]) => void) => { // eslint-disable-line @typescript-eslint/no-misused-promises -- tributejs ignores the returned promise, results arrive via the callback
       cb(mentionsUrl ? await fetchMentions(mentionsUrl) : []);
     },
     requireLeadingSpace: true,