Chore: Make tests less flakey & upgrade puppeteer to rrweb-snapshot test suite to run (#1084)

* Upgrade puppeteer to 17.1.3 in rrweb-snapshot

* Apply formatting changes

* Add ?

* Make tests less flakey

* Make attribute-setting more explicit

* Make test less flakey

* Make test less flakey

* Upgrade puppeteer for rrdom

* Use wait for request animation frame instead of timeout

* Force append to happen in second event

* Wait till iframe was loaded (now 100ms)

* Round the currentTime to 1 decimal place

README.md

@@ -120,7 +120,7 @@ In addition to adding integration tests and unit tests, rrweb also provides a RE
   </tr>
 </table>
 
-## Who's using rrweb
+## Who's using rrweb?
 
 <table>
   <tr>