#44318 - Fix psalm issues

1. Why is this change necessary?

To fix psalm issues.

2. What does this change do, exactly?

• It fixes the psalm issues.

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

• Check if psalm issues are correct solved
• Chekc if the MR !23 (merged) is also worked

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

https://redmine.netinventors.de/issues/44318

5. Checklist

• I have updated the plugin version and changelog
• I have updated the manual / created a manual update merge request
• I have updated the shopware store information
• I can confirm the code style fits our requirements
• I can confirm that no debug output is generated anywhere

6. Release Notes