Media Picker is slow when you have a large number of images at the root folder

[Nashuim]

Which exact Umbraco version are you using? For example: 9.0.1 - don't just write v9

9.5

Bug summary

When you have lots of images at the root folder (>1000) the media picker can take a very long time to load them and can actually freeze the browser when rendering them.

Specifics

No response

Steps to reproduce

1. Add 1000 images to the root folder
2. Use the media picker to select an image

Expected result / actual result

I think this should be paginated by default. I can see that it's already paginated when you use the search function but not at the first load.