[CAD-2832] Smash syncing from scratch every restart, temporary fix for standalone server.

[ksaric]

https://jira.iohk.io/browse/CAD-2832

Temporarily returning ledger state since the chain sync protocol depends on it for syncing.

[ksaric]

bors try+

[iohk-bors[bot]]

try

Build succeeded:

• buildkite/smash
• ci/hydra-eval
• ci/hydra-build:required