fix: Looping of data by reference with null coalescing

[aragon999]

1. Why is this change necessary?

When looping through an array, where a reference is used, the original data is not the same reference, when null coalescing is used, see: https://3v4l.org/oU3is

Hence the data is not properly modified.

2. What does this change do, exactly?

Check if the values are a non-empty array and remove the null coalescing.

3. Describe each step to reproduce the issue or behaviour.

-

4. Please link to the relevant issues (if any).

-

5. Which documentation changes (if any) need to be made because of this PR?

-

6. Checklist

• I have written tests and verified that they fail without my change
• I have squashed any insignificant commits
• This change has comments for package types, values, functions, and non-obvious lines of code
• I have read the contribution requirements and fulfil them.

[github-actions]

	Warnings
⚠️	The Pull Request doesn't contain any changes to the Upgrade file

[mitelg]

thanks for your contribution @aragon999 👍🎉💙