Fix Magento OS codebase for Integration Tests to be compatible with PHP 8.1

[andrewbess]

Description (*)

We run builds on PHP 8.1 and have results provided below:

• Failed 298
• Broken 1672
• Passed 9915
• Skipped 179

A lot of problems related from the wrong types of returned data in codebase

Related issue (*)

• Parent issue - Fix Integration Tests to be compatible with PHP 8.1 #34567

Expected result (*)

1. The count of failed and broken tests should be less then provided in description

Actual result (*)

1. Current count of the failed and broken tests

• Failed 298
• Broken 1672
• Passed 9915
• Skipped 179

[m2-assistant]

Hi @andrewbess. Thank you for your report.
To speed up processing of this issue, make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, Add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, review the Magento Contributor Assistant documentation.

Add a comment to assign the issue: @magento I am working on this

To learn more about issue processing workflow, refer to the Code Contributions.

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

⚠️ According to the Magento Contribution requirements, all issues must go through the Community Contributions Triage process. Community Contributions Triage is a public meeting.

🕙 You can find the schedule on the Magento Community Calendar page.

📞 The triage of issues happens in the queue order. If you want to speed up the delivery of your contribution, join the Community Contributions Triage session to discuss the appropriate ticket.

🎥 You can find the recording of the previous Community Contributions Triage on the Magento Youtube Channel

✏️ Feel free to post questions/proposals/feedback related to the Community Contributions Triage process to the corresponding Slack Channel