chore(package.json): remove pnpx from collect-i18n script for simplicity and consistency

Replace npx with direct playwright binary call to avoid npm v11 warnings
about unknown env configs (verify-deps-before-run and _jsr-registry).
These configs are passed from pnpm environment but not recognized by npm.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -32,7 +32,7 @@
     "knip": "knip --cache",
     "knip:no-cache": "knip",
     "locale": "lobe-i18n locale",
-    "collect-i18n": "npx playwright test --config=playwright.i18n.config.ts",
+    "collect-i18n": "playwright test --config=playwright.i18n.config.ts",
     "json-schema": "tsx scripts/generate-json-schema.ts",
     "storybook": "nx storybook -p 6006",
     "build-storybook": "storybook build"