选择满足规则的当前节点的审批候选人,根据条件选取当前node的审批候选人
当前节点全部信息:
nodeComp,nodeNo,nodeFlowNo,nodeName,nodeParent,nodeStyle,nodeTier
,nodeType,nodeStep,nodeRules,nodeEvent,taskComp,taskId
,taskFlowNo,workComp,workTaskId,workNodeNo,workState,workComment
,workESign,workUpdate,workIdx..