Add Save/Cancel Workflow for Profile Picture Changes

### Your use case

#### What would you like to do?
Add a draft screen with: confirmation/cancellation buttons.
#### Why would you like to do it?
So users can preview images before making a public change.
#### How would you like to achieve it?
Allow users to upload and preview a profile picture without immediately publishing it.
Add a Save changes button to apply the image.
Add a Cancel button to revert change.
Keep changes local until explicitly saved/published.

### Have you considered any alternatives?

Have a separate window open for editing/setting the image when uploaded, having a 'save' button for when done.

### Additional context

Uploaded profile pictures update publicly as soon as the upload is complete.
Rooms and spaces give you a preview, needing you to click "save" to effect change.

This separation is especially noticeable because there are no built-in editing or positioning tools to help users fine-tune the image before applying it.