feat(审批流程): 优化审批逻辑并添加抄送功能

重构审批条件判断逻辑，统一使用canApprove和canWithdraw计算属性控制按钮显示
为所有审批详情页添加撤回按钮功能
在审批列表页新增抄送功能，支持多选抄送人
调整提交成功后的跳转路由为/hrm/apply
仅在approverMode为template时设置tplId参数

klp-ui/src/views/hrm/requests/travel.vue

@@ -408,13 +408,16 @@ export default {
           bankName: this.form.bankName,
           bankAccount: this.form.bankAccount,
           remark: this.form.remark,
-          tplId: this.tplId,
+          // tplId: this.tplId,
           manualAssigneeUserId: this.assigneeUserId
         }
+        if (this.approverMode === 'template') {
+          payload.tplId = this.tplId
+        }
         try {
           await addTravelReq(payload)
           this.$message.success('提交成功')
-          this.$router.push('/hrm/requests')
+          this.$router.push('/hrm/apply')
         } catch (e) {
           this.$message.error('提交失败，请稍后重试')
         } finally {