Stabilize Functional Tests

[github-jira-sync-bot]

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https://github.com/magento/partners-magento2-infrastructure
https://github.com/magento/magento2-sample-data

AC:
Functional test build is green (PHP 7.4 & PHP 8.0)
Fix functional issues that cause failed tests.

[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-1471

[m2-assistant]

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[anzin]

@magento I am working on this