Solve compact() undefined variable issue

[tikhanovichA]

AUT-2884

Description

For cases when compact(): Undefined variable generates 500 on the PHP level. Now it happens only if we have cases when add or remove variable is empty. The class will be moved if you will see 500, but ACL will be not applied.

Note:
https://www.php.net/manual/en/function.compact.php
Before PHP 7.3, any strings that are not set will silently be skipped.

Changelog

• fix: Fix default values for $add and $remove variables

[github-actions]

Version

Target Version	7.7.9
Last version	7.7.8

There are 0 BREAKING CHANGE, 0 feature, 3 fixes

[Karol-Stelmaczonek]

• New code is covered by tests (if applicable)
• Tests are running successfully (old and new ones) on my local machine (if applicable)
• New code is respecting code style rules
• New code is respecting best practices
• New code is not subject to concurrency issues (if applicable)
• Feature is working correctly on my local machine (if applicable)
• Acceptance criteria are respected
• Pull request title and description are meaningful

[bartlomiejmarszal]

Review Checklist

• New code is covered by tests (if applicable)
• Tests are running successfully (old and new ones) on my local machine (if applicable)
• New code is respecting code style rules
• New code is respecting best practices
• New code is not subject to concurrency issues (if applicable)
• Feature is working correctly on my local machine (if applicable)
• Acceptance criteria are respected
• Pull request title and description are meaningful
• Pull request's target is not master
• Commits are following conventional commits
• Commits messages are meaningful
• Commits are atomic
• Changelog is updated according to changes (if applicable)
• Documentation is updated according to changes (if applicable)