test: 修复 web 端获取 data 异常问题

pages/component/canvas/canvas.test.js

@@ -10,11 +10,9 @@ beforeAll(async () => {
 
 describe('Canvas.uvue', () => {
   it('toBlob', async () => {
-    if (process.env.uniTestPlatformInfo.toLowerCase().startsWith('web')) {
-      const {
-        testToBlobResult,
-        testToDataURLResult
-      } = await page.data()
+    if (process.env.uniTestPlatformInfo.toLowerCase().startsWith('web')) {
+      const testToBlobResult = await page.data('testToBlobResult')
+      const testToDataURLResult = await page.data('testToDataURLResult')
 
       expect(testToBlobResult).toBe(true)
       expect(testToDataURLResult).toBe(true)