Fix: Restrict multiple categories in free plan

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Changes proposed in this Pull Request:

Related Pull Request(s)

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Closes

Closes # https://github.com/getdokan/dokan-pro/issues/3603

How to test the changes in this Pull Request:

Steps or issue link

Changelog entry

Restrict multiple categories in free plan

Check if Dokan Pro exists: this will prevent the Add new category button from showing in the free plan.

Before Changes

After Changes

Feature Video (optional)

Link of detailed video if this PR is for a feature.

PR Self Review Checklist:

Code is not following code style guidelines
Bad naming: make sure you would understand your code if you read it a few months from now.
KISS: Keep it simple, Sweetie (not stupid!).
DRY: Don't Repeat Yourself.
Code that is not readable: too many nested 'if's are a bad sign.
Performance issues
Complicated constructions that need refactoring or comments: code should almost always be self-explanatory.
Grammar errors.

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Summary by CodeRabbit

New Features
- The "Add new category" button in the product category selection modal is now conditionally displayed based on the activation of the Dokan Pro plugin.
Bug Fixes
- Improved logic to ensure the button only appears when appropriate conditions are met, enhancing user experience.

Walkthrough

The changes involve adding a conditional check in the file templates/products/dokan-category-header-ui.php to verify whether the Dokan Pro plugin is active before displaying the "Add new category" button in the category selection modal. This modification ensures that the button appears only when both the Dokan Pro plugin is installed and active, and the variable $is_single is false. The overall structure and functionality of the modal remain unchanged.

Changes

File Path	Change Summary
templates/products/dokan-category-header-ui.php	Added a check for `dokan()->is_pro_exists()` alongside the existing `$is_single` condition to control the visibility of the "Add new category" button.

Poem

🐇 In the garden where categories grow,
A button appears, but only for those who know.
If Dokan Pro's in play, it shines so bright,
Adding new categories feels just right!
With a hop and a skip, let's make it clear,
Only when it's active, the button draws near! 🌼

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getdokan / dokan