Re: [Static web assets] Support watch in static web assets

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

Watching files on the new `IFileProvider` introduced in .NET6 is not working and thus breaking development workflows.

This was tracked in #40372 by @javiercn, but that issues was closed as completed without any further insights. Given that this issue is not solved, I am opening this ticket to further track it and request a status update.

PS: There is also #40369, but both are closed and locked without any further information on the status in ASP.NET Core.

### Expected Behavior

I expect watching files to work correctly.

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version

9.0.200

### Anything else?

_No response_