Fix all pages that use the image uploader and improve the component

### Check for existing issues

- [x] Completed

### Describe the bug / provide steps to reproduce it

#536 updated the component but forgot to update all pages that use it.

- Add a default icon to the component and a default class, currently, they are both required and shouldn't be.
- Make the "type" argument actually be called "memory_unit" and add a default value.

### What browsers are you seeing the problem on?

_No response_

### If applicable, add screenshots to help explain present your vision of the bug

_No response_