优化 slider-maxValue 测试例 模拟点击坐标点，适配 iOS12.4机型

(cherry picked from commit 8b6b70ec)

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

@@ -20,8 +20,13 @@ describe('rich-text-test', () => {
   it('richt-text-height', async () => {
     let beforeValue = await page.data('richTextHeight')
     if (beforeValue < 10) {
-      await page.waitFor(1000)
+      await page.waitFor(2000)
       beforeValue = await page.data('richTextHeight')
+
+      if (beforeValue < 10) {
+        await page.waitFor(2000)
+        beforeValue = await page.data('richTextHeight')
+      }
     }
     await page.callMethod('changeText')
     await page.waitFor(500)

pages/component/slider/slider-maxValue.test.js

@@ -27,7 +27,7 @@ describe('touch-events-test', () => {
   it('test-slider-max-value', async () => {
 
     let iconRect = await page.data('sliderRect')
-    let x = iconRect.x + 15
+    let x = iconRect.x + 25
     let y = iconRect.y + 15
 
     // 滑动事件