[BUG] - 🐛 Cost tracking for multi-agent runs sometimes resets to zero

[nunocoracao]

Describe the bug
Cost tracking in multi-agent runs is not adding up correctly - sometimes it goes down to 0

Version affected
v1.0.2

How To Reproduce

Detailed steps to reproduce the behavior:

1. use the dev-team.yaml in examples to build omsething
2. when a transfer action happens cost goes down

Expectation
Cost always adds up