[Misc] pin version of fa3-fwd

[ZJY0516]

Purpose

pin version of fa3-fwd, because it's coupled with pytorch version. I will bump version when we support pytorch 2.10

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.

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[david6666666]

#1046 @gcanlin need to update after this pr merged