UTS3 are not allow using Outline with Transparency on, while UTS2 able to do that

Also i want to report, that UTS3 are not allow using Outline with Transparency on, while UTS2 able to do that

Originally posted in #375

@Hatsune-Mikun
I am creating this issue separate #375 to keep each bug report focused and manageable.
To help us investigate and resolve this issue, could you please provide:

1. Specific details about the issue:

   • What render pipeline are you using? (Built-in RP / URP / HDRP)
   • What exactly happens when you enable both Outline and Transparency in UTS3?
   • Are there any error messages in the console?

2. Sample project with reproduction steps

   • A minimal reproduction project would be extremely helpful
   • Step-by-step instructions to reproduce the issue

3. Expected vs. Actual behavior:

   • Screenshots or videos comparing UTS2 (working) vs UTS3 (not working) would be valuable

Thank you for reporting this issue!

The issue does not name a file, test, render pipeline, error, or reproducible steps. Start by determining whether the project uses Built-in RP, URP, or HDRP, then capture the Outline and Transparency behavior, console output, and a minimal sample comparing UTS2 with UTS3. Done means the failure is reproducible and the expected versus actual behavior is documented.