优化 rich-text.test.js 示例，调整调用时机

(cherry picked from commit 3981e811)

pages/component/rich-text/rich-text.test.js

@@ -18,6 +18,7 @@ describe('rich-text-test', () => {
 
 
   it('richt-text-height', async () => {
+    await page.waitFor(1000);
     let beforeValue = await page.data('richTextHeight')
     await page.callMethod('changeText')
     await page.waitFor(500)

pages/component/rich-text/rich-text.uvue

@@ -36,7 +36,7 @@
       this.richTextElement = uni.getElementById('richtext') as UniElement
       setTimeout(() => {
         this.updateRichTextHeight()
-      }, 500)
+      }, 1200)
     },
     methods: {
       changeText() {