fix: Cannot launch pre season game

[louisparrouy]

Summary

Hey,

I completed season 1, and I am in preseason of season 2. I have a friendly game against Fnatic but I cannot start it.
I suspect this is because they don't have a support player yet but I am stuck.

Reproduction steps

Just click on top right corner button to start the game

Expected behavior

Be able to start the game

Actual behavior

Nothing happen

Version or commit

0.2.0

Platform

Other / unknown

Logs or screenshots

Pre-flight checks

• I searched existing issues and did not find a duplicate.
• I understand a PR must wait for maintainer status:approved.
• If this involves Leaguepedia, generated data, or inherited assets, I included provenance details or explained why none are needed.