[plugin-web-app-playwright] Add element wait steps

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.49%. Comparing base (e9e4c96) to head (f910366).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5224 +/- ## ========================================= Coverage 97.49% 97.49% - Complexity 6899 6907 +8 ========================================= Files 950 950 Lines 19898 19934 +36 Branches 1313 1314 +1 ========================================= + Hits 19399 19435 +36 Misses 390 390 Partials 109 109 ```

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