fix(Icon): supplementary exception catching (#3370)

Author: anlyyao

src/icon/icon.ts

@@ -41,8 +41,14 @@ export default class Icon extends SuperComponent {
 
       this.setData({ isImage }, async () => {
         if (isImage) {
-          const { height } = await getRect(this, `.${classPrefix}`);
-          const iconSize = sizeValue || addUnit(height);
+          let iconSize = sizeValue;
+          if (!iconSize) {
+            await getRect(this, `.${classPrefix}`)
+              .then((res) => {
+                iconSize = addUnit(res?.height);
+              })
+              .catch(() => {});
+          }
 
           iconStyle.width = iconSize;
           iconStyle.height = iconSize;