chore: Replace prettier with oxfmt (#8177)

Configure oxfmt ignorePatterns to exclude non-JS/TS files (md, json,
css, yaml, etc.) to match previous Prettier behavior.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8177-chore-configure-oxfmt-to-format-only-JS-TS-Vue-files-2ee6d73d3650815080f3cc8a4a932109)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>

lint-staged.config.ts

@@ -1,6 +1,9 @@
 import path from 'node:path'
 
 export default {
+  'tests-ui/**': () =>
+    'echo "Files in tests-ui/ are deprecated. Colocate tests with source files." && exit 1',
+
   './**/*.js': (stagedFiles: string[]) => formatAndEslint(stagedFiles),
 
   './**/*.{ts,tsx,vue,mts}': (stagedFiles: string[]) => [
@@ -14,7 +17,7 @@ function formatAndEslint(fileNames: string[]) {
   const relativePaths = fileNames.map((f) => path.relative(process.cwd(), f))
   const joinedPaths = relativePaths.map((p) => `"${p}"`).join(' ')
   return [
-    `pnpm exec prettier --cache --write ${joinedPaths}`,
+    `pnpm exec oxfmt --write ${joinedPaths}`,
     `pnpm exec oxlint --fix ${joinedPaths}`,
     `pnpm exec eslint --cache --fix --no-warn-ignored ${joinedPaths}`
   ]