[DO NOT MERGE] Manual Fusion PR for Comparison

[rasmith]

This PR is just for comparison of fusion pass vs manual fusion for fp8 output scale integration.

DO NOT MERGE

[github-actions]

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[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @rasmith.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork