fix: 确山 历史数据，grid模式，只有个图表时，100%显示

packages/extend-components/EC_HistoryView/src/GridChart.js

@@ -77,7 +77,7 @@ const GridChart = memo((props) => {
         option: option,
       };
     });
-    return _options
+    return _options;
   }, [gridData, smooth, curveCenter]);
 
   return (
@@ -88,7 +88,14 @@ const GridChart = memo((props) => {
           !item.option.series.length ||
           !item.option.series.find((e) => e.data && e.data.length > 0);
         return (
-          <div key={item.key} className={`${prefixCls}-grid-item`}>
+          <div
+            key={item.key}
+            className={`${prefixCls}-grid-item`}
+            style={{
+              height: gridData.length === 1 ? '100%' : '',
+              width: gridData.length === 1 ? '100%' : '',
+            }}
+          >
             <div className={`${prefixCls}-grid-item-wrap`}>
               <ChartTitle prefixCls={prefixCls} title={sensorName} unit={unit} />
               {isEmpty ? (