Improve full project search error handling (#23092)

GitOrigin-RevId: aded8cfbe1d4b24cb3128c8c377afe35f17cc8cf

services/web/frontend/extracted-translations.json

@@ -776,6 +776,7 @@
   "invalid_filename": "",
   "invalid_password_contains_email": "",
   "invalid_password_too_similar": "",
+  "invalid_regular_expression": "",
   "invalid_request": "",
   "invite": "",
   "invite_expired": "",

services/web/locales/en.json

@@ -1022,6 +1022,7 @@
   "invalid_password_too_long": "Maximum password length __maxLength__ exceeded",
   "invalid_password_too_short": "Password too short, minimum __minLength__",
   "invalid_password_too_similar": "Password is too similar to parts of email address",
+  "invalid_regular_expression": "Invalid regular expression",
   "invalid_request": "Invalid Request. Please correct the data and try again.",
   "invalid_zip_file": "Invalid zip file",
   "invite": "Invite",