fix: disable input elements in PRO upsell

[RaduCristianPopescu]

Summary

Will affect visual aspect of the product

NO

Screenshots

Test instructions

• Go to page and try to interact with filters.

Check before Pull Request is ready:

• I have written a test and included it in this PR
• I have run all tests and they pass
• The code passes when running the PHP CodeSniffer
• Code meets WordPress Coding Standards for PHP, HTML, CSS and JS
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Closes https://github.com/Codeinwp/feedzy-rss-feeds-pro/issues/860

[Copilot]

Pull Request Overview

This PR disables input elements in the conditions control for non-PRO users to prevent interaction with PRO-only features. The change improves the user experience by making the upsell state more explicit through disabled form controls.

• Adds early return in the onChangeCondtion function for non-PRO users
• Disables all form controls (SelectControl and TextControl) when PRO features are not available
• Refactors inline PRO check to use a consistent isPro variable

[pirate-bot]

Plugin build for 7c3934d is ready 🛎️!

• Download build

Note

You can preview the changes in the Playground