ui: better ogp meta on problem_detail page

packages/ui-default/package.json

@@ -29,6 +29,7 @@
     "@sentry/webpack-plugin": "^3.1.2",
     "@simplewebauthn/browser": "13.1.0",
     "@svgr/webpack": "^8.1.0",
+    "@types/html-to-text": "^9.0.4",
     "@types/jquery": "^3.5.32",
     "@types/jquery.transit": "^0.9.33",
     "@types/json-schema": "^7.0.15",
@@ -127,6 +128,7 @@
     "cssfilter": "^0.0.11",
     "esbuild": "0.24.0",
     "fs-extra": "^11.3.0",
+    "html-to-text": "^9.0.5",
     "js-yaml": "^4.1.0",
     "jsesc": "^3.1.0",
     "katex": "^0.16.21",