Improve the toasts fixture of the playwright-common tools (#33158)

* Improve the toasts fixture of the playwright-common tools

* Increase @element-hq/element-web-playwright-common version to 3.2.0

* Default to 2 second wait for IfExists variants

* Set playwright-common version to 4.0.0 due to breaking change

* Move handleToast into a free function

* Rename handleToast to clickToastButton

* Document new param on clickToastButton

packages/playwright-common/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@element-hq/element-web-playwright-common",
     "type": "module",
-    "version": "3.1.0",
+    "version": "4.0.0",
     "license": "SEE LICENSE IN README.md",
     "repository": {
         "type": "git",