NEZ-2886 fix：Agents新建时，首次选择Data center下拉框出现闪动

nezha-fronted/src/components/common/project/meta2d/js/meta2dMainCalc.js

@@ -346,7 +346,6 @@ export default {
         if (!positionShow) {
           return
         }
-        console.log(pen)
         this.chartParams = {
           ...pen.data.tooltip,
           unit: this.params.unit,
@@ -366,7 +365,7 @@ export default {
             } else {
               this.position.left = ePosition.layerX - 20 - 400
             }
-            if (boxHeight > (ePosition.layerY + 300)) {
+            if (boxHeight / 2 > ePosition.layerY) {
               this.position.top = ePosition.layerY + 50
             } else {
               this.position.top = ePosition.layerY - 300