Fix Blazy 8.x-2.6 conflicting issues with the blazy/loading library and the use of Varbase Media blazy blurry option

Problem/Motivation

Blazy 8.x-2.6 was released 7 Feb 2022
https://www.drupal.org/project/blazy/releases/8.x-2.6

#3262804: Add preload option to help boost actual and perceived performance
#3262724: Add option for (un-)loading attribute, a buffer for anti-pattern
#3254692: Drupal 10, identify deprecation, etc.
#3257511: Optimization pre Blazy 3
#3258851: Make old bLazy as fallback for IO, not competing
#3257512: Decouple lazyload JavaScript. Leaving Blazy as DRY buster for sub-modules.
#3101810: Play nice with AMP

Similar to core direction we are going to drop many deprecated stuffs by then. However to make smooth transition to 3.x we need to finalize a few things at 2.x. So switching from 2.x to 3.x should be about dropping deprecation, not another struggle with BC

also
Slick Carousel 8.x-2.5 was released 7 Feb 2022
https://www.drupal.org/project/slick/releases/8.x-2.5

Steps to reproduce

Given that on the update to Blazy 8.x-2.6 version on a Varbase website
When having media image or video with a cover image
Then the old Blazy placeholder icon and style will start to show in websites

Proposed resolution

Unset the styling css file for the placeholder from the blazy/loading library when the "Use Blazy Blurry" settings for Varbase Media is checked.

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Release varbase-9.0.5, varbase_media-9.0.8

Varbase update type:

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A