[ROCm] Fix DeepSeek R1/V3 incorrect output in eager mode.

[Duyi-Wang]

Purpose

DeepSeek R1/V3 models produce incorrect output when running in eager mode, while graph mode works correctly.

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

[gemini-code-assist]

Code Review

This pull request addresses an issue where DeepSeek models produce incorrect output on ROCm in eager mode. The fix involves changing how forward_hip calls forward_cuda for rotary embeddings, correctly using the returned values instead of assuming an in-place operation. This change appears correct based on the problem description. I've added one comment to improve code clarity by removing a now-misleading comment.

[gemini-code-assist]

These comments state that an internal operation is in-place, which contradicts the FIXME on the next line and the logic of the fix (which treats forward_cuda as not in-place by using its return value). To avoid confusion for future readers and maintainers, it would be better to remove these now-misleading comments.

[divakar-amd]

A similar fix recently got merged: #27373