Improve quality setting handling in Compression settings

[ineagu]

Refactored the Compression.js component to better handle toggling between auto and manual quality settings while fixing https://github.com/Codeinwp/optimole-service/issues/1516#issuecomment-3355204589. Updated the minimum allowed quality value in settings.php from 1 to 50 to stay consistent with the front-end.

Changed default compression setting to 80, which is more likely to be used vs 90, which is not recommended.

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:

Refactored the Compression.js component to better handle toggling between auto and manual quality settings while fixing https://github.com/Codeinwp/optimole-service/issues/1516#issuecomment-3355204589. Updated the minimum allowed quality value in settings.php from 1 to 50 to stay consistent with the front-end.

Changed default compression setting to 80, which is more likely to be used vs 90, which is not recommended.

Closes # .

How to test the changes in this Pull Request:

1. Disable machine learning compression & save
2. Ensure the default value is used on the frontend.
3. Make sure going back to mauto or migrating from an older version works as expected.

Other information:

• [x ] 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?
• [ x] Have you successfully ran tests with your changes locally?