feat：流水线并发运行时，支持限制并发个数和排队 TencentBlueKing#10718

# Reviewed, transaction id: 20177

src/frontend/devops-pipeline/src/components/pipelineSetting/RunningLock.vue

@@ -265,6 +265,7 @@
                         requiredRule,
                         {
                             validator: (val) => {
+                                if (!val && val !== 0) return true
                                 return /^(?:[1-9]|[1-9][0-9]|1[0-9]{2}|200)$/.test(val)
                             },
                             message: this.$t('settings.maxConRunningQueueSizeTips'),