Describe the bug

The fileupload progressbar in advance mode is not visible for the simple usages and brokes modals using it. To fix it we need to provide position relative for the p-fileupload-content

initial:

inside of modal:

fixed:

Pull Request Link

#17290

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://primeng.org/fileupload#advanced

Environment

Ubuntu 22

Angular version

19

PrimeNG version

v19

Node version

18

Browser(s)

Firefox

Steps to reproduce the behavior

1. Use a fileupload with advanced mode.
2. Try to upload files.
   Progress bar is not visible

1.Use a fileupload with advanced mode in a modal
2. Try to upload files.
Progress bar is placed on the top of its container.

Expected behavior

The progress bar is fixed inside of the p-fileupload-content.