Cannot launch subagents using different models when BYOK

[zkw]

Describe the bug

The main model cannot launch subagents using different models when BYOK. It was possible in 1.0.19

Affected version

1.0.20

Steps to reproduce the behavior

Ask main agent to /fleet subagent using specific model.

Expected behavior

Subagent is started using specific model.

Additional context

No response