Fix number of media in the bulk optimization

[remyperona]

Description

This PR reverts the bulk optimization method to how it was originally, as the original already managed the next-gen versions correctly.

Type of change

• Bug fix (non-breaking change which fixes an issue).

Checklists

Feature validation

• I triggered all changed lines of code at least once without new errors/warnings/notices.

Code style

• I wrote self-explanatory code about what it does.
• I named variables and functions explicitely.
• I did not introduce unecessary complexity.

[Mai-Saad]

@Tabrisrp Thanks for the PR.
Can see the notice 'Hold on ' that images are already optimized also it isnot displayed (like the one here #830)
scenario:
1- activate imagify
2- disable optimize with upload
3- upload some images
4- in bulk optimization click imagify all

[remyperona]

Thanks there was a missing change, now it's working, just tested it out on my local

[Mai-Saad]

Thanks, Working as expected
Uploading testrail-report-582.pdf…