fix(label): 增加label单测，解决数据量过多,lable自动隐藏场景下报错问题

tests/bugs/6114-spec.ts

@@ -0,0 +1,48 @@
+import { Chart } from '../../src';
+import { createDiv } from '../util/dom';
+import { delay } from '../util/delay';
+
+/**
+ * 增加 label -->> layout 特定情况报错
+ * 报错详情具体查看 https://github.com/antvis/G2/issues/6114
+ * 此问题在G代码中修复掉了
+ * 
+ */
+describe('#6114', () => {
+  it('dual-axes-label-layout.spec', async () => {
+
+    const group = Array.from({ length: 500 }, (value, index) => {
+      return {
+        time: index,
+        waiting: index * (Math.random() * 10),
+        people: index * (Math.random() * 10),
+      }
+    })
+
+    const chart = new Chart({
+      container: createDiv(),
+      autoFit: true,
+      height: 500
+    });
+    chart.data(group);
+    chart.interval()
+      .position('time*waiting')
+      .color('#3182bd')
+      .label('waiting', {
+        layout: [{ type: 'limit-in-plot', }],
+      })
+    chart.line()
+      .position('time*people')
+      .color('#fdae6b')
+      .size(3)
+      .shape('smooth')
+      .label('people', {
+        layout: [{ type: 'overlap' }, { type: 'limit-in-plot', cfg: { action: 'translate' } },],
+      })
+
+
+    chart.render();
+    // await delay(20)
+
+  })
+})