Remove Unnecessary --privileged Flag While Keeping It for WSL Users

[liu-shaojun]

Description

According to the issue: #12792, we need to remove --privileged whenever possible.

Through testing, we found that when launching the serving-xpu image on Linux, using --device=/dev/dri --group-add video can replace --device=/dev/dri --privileged. By adding the container user to the video group, it can access the /dev/dri device. Both offline inference and benchmarking work fine under this configuration.

However, on WSL + Docker, --privileged is still required; otherwise, the GPU cannot be accessed.

1. Why the change?

• Removed unnecessary --privileged usage.
• Retained --privileged for Windows WSL users, as it is still required in that case.

2. User API changes

3. Summary of the change

4. How to test?

• N/A
• Unit test: Please manually trigger the PR Validation here by inputting the PR number (e.g., 1234). And paste your action link here once it has been successfully finished.
• Application test
• Document test
• ...

5. New dependencies

• New Python dependencies
  - Dependency1
  - Dependency2
  - ...
• New Java/Scala dependencies and their license
  - Dependency1 and license1
  - Dependency2 and license2
  - ...

[ACupofAir]

LGTM

[glorysdj]

LGTM