refactor: fix missingType.return errors

[warcooft]

Description
Fixes missingType.return errors.

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[github-actions]

👋 Hi, @warcooft!

We detected conflicts in your PR against the base branch 🙊
You may want to sync 🔄 your branch with upstream!

Ref: Syncing Your Branch

[paulbalandan]

Thanks, @warcooft, for helping in clearing the phpstan errors! Can you please rebase and regenerate the baseline?

[samsonasik]

You need to use rebase instead of merge

[warcooft]

@samsonasik Just checking, did the rebase finish correctly?

[samsonasik]

Thank you @warcooft

[warcooft]

Thanks for the quick guidance!