🚸(frontend) fix copy to include all meeting info from side panel

Rework clipboard functionality to copy complete meeting information when
users click the copy button in the information side panel.

Previously only partial data was copied, causing user confusion. Now
includes all relevant meeting details as expected.

Improves user experience by meeting user expectations for copy behavior.

src/frontend/src/locales/nl/rooms.json

@@ -233,6 +233,10 @@
       "phone": {
         "call": "Bel:",
         "pinCode": "Code:"
+      },
+      "clipboard": {
+        "url": "Klik op deze link om deel te nemen aan de videoconferentie: {{roomUrl}}",
+        "numberAndPin": "Bel {{phoneNumber}} en voer deze code in om telefonisch deel te nemen: {{pinCode}}"
       }
     }
   },