fixed wait test for wait for text

Author: DavertMik

lib/helper/Playwright.js

@@ -2794,7 +2794,7 @@ class Playwright extends Helper {
       new Promise((_, reject) => {
         setTimeout(() => reject(errorMessage), waitTimeout)
       }),
-      contextObject.waitForFunction(text => document.body && document.body.innerText.indexOf(text) > -1, text, { timeout: timeoutGap }),
+      this.page.waitForFunction(text => document.body && document.body.innerText.indexOf(text) > -1, text, { timeout: timeoutGap }),
       promiseRetry(
         async () =>
           contextObject