config: trust period consistency (#5297)

## Description

make state sync trust period consistent with the default in the `tendermint light` cmd

Closes: #XXX

config/config.go

@@ -729,7 +729,9 @@ func (cfg *StateSyncConfig) TrustHashBytes() []byte {
 
 // DefaultStateSyncConfig returns a default configuration for the state sync service
 func DefaultStateSyncConfig() *StateSyncConfig {
-	return &StateSyncConfig{}
+	return &StateSyncConfig{
+		TrustPeriod: 168 * time.Hour,
+	}
 }
 
 // TestFastSyncConfig returns a default configuration for the state sync service