User story: As an uploader, I want a way to apply my structured data edits to all files, so that I can avoid having to add data to each file manually when I do a batch upload.

We have this:
There's existing functionality, but it's hidden behind config that is turned off by default and can only be enabled in campaigns: T231225
We want to explore rolling this out more widely, so let's build something that would allow people to opt in to that functionality.

We want this:
When a certain value is present in the UploadWizard querystring (e.g. ?allowCopy=1), enable/disable the copy functionality

Acceptance Criteria:

• When a certain value is present in the UploadWizard querystring (e.g. ?allowCopy=1), the copy functionality is enabled/disabled accordingly