fix(telegram): allow fallback models in /model validation (#40105)

Merged via squash.

Prepared head SHA: de07585e03
Co-authored-by: avirweb <257412074+avirweb@users.noreply.github.com>
Co-authored-by: velvet-shark <126378+velvet-shark@users.noreply.github.com>
Reviewed-by: @velvet-shark

src/commands/agent.ts

@@ -950,6 +950,7 @@ async function agentCommandInternal(
         catalog: modelCatalog,
         defaultProvider,
         defaultModel,
+        agentId: sessionAgentId,
       });
       allowedModelKeys = allowed.allowedKeys;
       allowedModelCatalog = allowed.allowedCatalog;