fix: set proper image path, when using dynamic media_folder

[smashercosmo]

Summary

Set proper image path by replacing it with the most actual media_folder field value. Fixes #3723

Test plan

No idea, how it should be tested.

Checklist

• I have read the contribution guidelines.
• Code is formatted via running yarn format.
• Tests are passing via running yarn test.
• The status checks are successful (continuous integration). Those can be seen below.

P.S

I'm not sure at all that this is a proper way to fix it. But decided to make a PR just to get discussion started.

[smashercosmo]

Just tested this locally and seems that this doesn't fix the issue :(

[smashercosmo]

Ok, I have to admit, that I'm stuck. Send help :)

[erezrokah]

Thanks @smashercosmo, I'll try to have a look later this week

[erezrokah]

Closing this PR to continue the discussion in the issue #3723