Fix Linea Sepolia maru config for snapshot sync

- Disable payload-validation-enabled (same as mainnet fix)
- Increase desync-tolerance to 100000 (allow CL/EL sync gap)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

linea/sepolia/maru/config.toml.template

@@ -29,7 +29,7 @@ refresh-interval = "3s"
 # Besu and Geth node as execution layer client
 engine-api-endpoint = { endpoint = "http://${EL_HOST}:8551", jwt-secret-path = "/jwtsecret" }
 eth-api-endpoint = { endpoint = "http://${EL_HOST}:8545" }
-payload-validation-enabled = true
+payload-validation-enabled = false
 
 [observability]
 port = 9090
@@ -43,7 +43,7 @@ port = 8080
 peer-chain-height-polling-interval = "5s"
 el-sync-status-refresh-interval = "5s"
 sync-target-selection = "Highest"
-desync-tolerance = 0
+desync-tolerance = 100000
 
 [syncing.download]
 block-range-request-timeout = "10s"