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/css/modules/button.css

@@ -103,7 +103,7 @@
 }
 
 /* reference sizes (not exactly at the moment): normal: padding-x=21, height=38 ; compact: padding-x=15, height=32 */
-.ui.button { /* stylelint-disable-line no-duplicate-selectors */
+.ui.button { /* stylelint-disable-line no-duplicate-selectors -- deliberate second block for the reference sizes */
   gap: var(--gap-block);
   min-height: 38px;
   padding: 0.57em /* around 8px */ 1.43em /* around 20px */;