perf: Simplify logic with dedicated helper function 'blank'

[Ar-Monta]

Description

This commit improves the performance of the code by enhancing a dedicated helper function named blank.

Motivation and context

The function now uses a PHP built-in function named empty instead of the logic that was previously handled by two conditions. This refactoring reduces code duplication and improves readability.

How has this been tested?

This function is verified to produce the same output for all valid inputs.

Types of changes

Commits are special refactor changes, that improve performance.

Conclusion:

• I have created a branch for this patch/feature.
• Each individual commit in the pull request is meaningful.

[github-actions]

Thank you for your pull request. However, you have submitted this PR on the Illuminate organization which is a read-only sub split of laravel/framework. Please submit your PR on the https://github.com/laravel/framework repository.

Thanks!