fix(hooks): 修改在使用useEcharts时, getInstance无法获取到最新的echarts实例的问题 (#2650)

src/hooks/web/useECharts.ts

@@ -60,11 +60,12 @@ export function useECharts(
 
   function setOptions(options: EChartsOption, clear = true) {
     cacheOptions.value = options;
+    return new Promise((resolve) => {
       if (unref(elRef)?.offsetHeight === 0) {
         useTimeoutFn(() => {
           setOptions(unref(getOptions));
+          resolve(null);
         }, 30);
-      return;
       }
       nextTick(() => {
         useTimeoutFn(() => {
@@ -76,8 +77,10 @@ export function useECharts(
           clear && chartInstance?.clear();
 
           chartInstance?.setOption(unref(getOptions));
+          resolve(null);
         }, 30);
       });
+    });
   }
 
   function resize() {