[MFTF] Investigate and fix code affected by saner string to number comparisons

[github-jira-sync-bot]

Reference PHP 8 Backward Incompatible Changes

• https://www.php.net/manual/en/migration80.incompatible.php
• <https://wiki.corp.magento.com/pages/viewpage.action?spaceKey=QMT&title=%5BSpike%5DMFTFPHP8Compatibility>

Project: https://github.com/magento/magento2-functional-testing-framework

AC:

• Non-strict comparisons between numbers and non-numeric strings now work by casting the number to string and comparing the strings. Comparisons between
  numbers and numeric strings continue to work as before. Notably, this means that 0 == "not-a-number" is considered false now.
  RFC: https://wiki.php.net/rfc/string*to_number*comparison
• Fix code affected by saner string to number comparisons

[github-jira-sync-bot]

The issue was exported from the internal Jira. The link to the original Jira issue: https://jira.corp.magento.com/browse/AC-515

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[bohdan-harniuk]

@magento I am working on this

[bohdan-harniuk]

Hello, team!

I reviewed the code for String to Number Comparison. I have not found any place that can be considered critical and in which we need to make any changes. We should postpone this task until MFTF framework is able to be run on the PHP 8.

Thanks, Bohdan.

cc. @fascinosum