asteria-game: shadow orphan chain-sync-client driver + bump compose tag
The sidecar:f889dbc image bakes /opt/antithesis/test/v1/chain-sync-client/parallel_driver_flaky_chain_sync.sh which expects the adversary daemon — a separate component absent from this testnet. Without it the script fails (exit 1) on every fire and trips Antithesis's "Always: zero exit" property. Mounting tmpfs over the chain-sync-client/ path on the sidecar container hides the script from the composer at start time without modifying the upstream image. Newer sidecar tags have the script removed at the source but introduce Amaru-specific drivers that would fail on this Amaru-less testnet — net no gain. The targeted shadow is the cleanest fix. Bumps the asteria-game compose tag to d0d9531 (drivers exit 0 on transient not-yet-ready conditions).