feat: update grouped_topk to support softmax and sigmoid

[zixuanzhang226]

Motivation

This PR is to support both softmax and sigmoid scoring functions in grouped_topk. Also, verified DeepSeek V2/V3/R1 uses biased_grouped_top and updated the corresponding comments.
Ref #2739

Modifications

Checklist

• Format your code according to the Code Formatting with Pre-Commit.
• Add unit tests as outlined in the Running Unit Tests.
• Update documentation / docstrings / example tutorials as needed, according to Writing Documentation.
• Provide throughput / latency benchmark results and accuracy evaluation results as needed, according to Benchmark and Profiling and Accuracy Results.
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[FrankLeeeee]

LGTM.

[FrankLeeeee]

cc @zhyncs @zhaochenyang20

[zhaochenyang20]

@FrankLeeeee Thanks @zixuanzhang226 could you rebase with the main? I can merge it tommorow.

[zixuanzhang226]

@FrankLeeeee Thanks @zixuanzhang226 could you rebase with the main? I can merge it tommorow.

Hi @zhaochenyang20 , I rebased with main. Thank you!

[zhaochenyang20]

@zixuanzhang226 Still out of main. And, could you add a description to this PR.

[zhaochenyang20]

@zixuanzhang226 could you rebase this with the main? And, do we need to merge it? @FrankLeeeee

[zixuanzhang226]

@zixuanzhang226 could you rebase this with the main? And, do we need to merge it? @FrankLeeeee

I rebased it! Thanks!

[zixuanzhang226]

@zhaochenyang20 I also updated the description! Thank you!

[FrankLeeeee]

@zhaochenyang20 this pr can be merged

[zixuanzhang226]

@zhaochenyang20 this pr can be merged

Hello @zhaochenyang20, would you please merge it? Thank you!

[zhaochenyang20]

@zixuanzhang226 I don't know why I can't rebase your PR. Could you rebase it and I can run the CI. I don't have access to merge main into your PR.

[FrankLeeeee]

@zhaochenyang20 squash and merge?