[AMD] rocm 7.2 image release, PR test, Nightly Test

[yctseng0211]

Motivation

Enable Rocm 7.2

Modifications

ROCM 7.2

• PR Test
• Nightly Test
• cleanup vllm dependencies

Accuracy Tests

Nightly All green : https://github.com/sgl-project/sglang/actions/runs/21875099676

Benchmarking and Profiling

Checklist

• Format your code according to the Format code with pre-commit.
• Add unit tests according to the Run and add unit tests.
• Update documentation according to Write documentations.
• Provide accuracy and speed benchmark results according to Test the accuracy and Benchmark the speed.
• Follow the SGLang code style guidance.

Review Process

1. Ping Merge Oncalls to start the PR flow. See the PR Merge Process.
2. Get approvals from CODEOWNERS and other reviewers.
3. Trigger CI tests with comments or contact authorized users to do so.
   • /tag-run-ci-label, /rerun-failed-ci, /tag-and-rerun-ci
4. After green CI and required approvals, ask Merge Oncalls to merge.

[gemini-code-assist]

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[michaelzhang-ai]

Nightly pass: https://github.com/sgl-project/sglang/actions/runs/21875099676

[HaiShaw]

Changes are AMD (_is_hip or _is_aiter) constrained.

[HaiShaw]

rename release-docker-amd-rocm720-nightly-preview.yml to release-docker-amd-rocm720-nightly.yml next time; consider to add release-docker-amd-rocm720.yml next time.