Fix collector only calling forkchoice after 1000 blocks instead of sy…

…nc limit (#10362)

cl/phase1/execution_client/block_collector/block_collector.go

@@ -48,6 +48,7 @@ func NewBlockCollector(logger log.Logger, engine execution_client.ExecutionEngin
 		beaconChainCfg: beaconChainCfg,
 		logger:         logger,
 		engine:         engine,
+		syncBackLoop:   syncBackLoopAmount,
 	}
 }