fix: disabling scaling also removes retina functionality

[RaduCristianPopescu]

All Submissions:

• Have you followed the Optimole Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

When Image Scaling is disabled, the Retina Quality toggle is automatically disabled with an informational message explaining the dependency.

Closes #769

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

[pirate-bot]

Plugin build for 9f9ab98 is ready 🛎️!

• Download build
• Download dev

[selul]

@RaduCristianPopescu here I think is no longer relevant, in the most recent version we also introduced retina based srcset which is non js dependent

optimole-wp/inc/tag_replacer.php

Line 125 in e40ce70

public function filter_attachment_image_attributes( $attr, $attachment, $size ) {