[BUG] Image assets disappear after updating party size multiple

[DutchCoder420]

Describe the bug
Large and small images disappear a few minutes after updating the party size multiple times. This issue does not occur in version 1.0.175 or earlier on NuGet, but it is present in all versions from 1.1 onward.

To Reproduce

1. Create a basic presence with a party and set the large image with a url.
2. Implement a loop that updates the party size every 10 seconds.
3. After a few minutes, the images reset to their default state.

Expected behavior
The images should remain unchanged and not reset to the default.

Desktop

• OS: Windows
• Framework: .NET 8.0
• Library Version: latest