generate_input receives a random seed argument

[ngc92]

adds a seed argument to data generation functions.
NOTE This requires an update to existing leaderboard reference files
Here, I've only updated the identity test so far.

[alexzhang13]

@ngc92 Just one Q about this, in our actual LB evals, how do we enforce a hidden seed that isn't visible to the user?

[alexzhang13]

NOTE This requires an update to existing leaderboard reference files

Can we set a default seed on the eval side? Or do you think this is dangerous? Wait nvm lol I see the issue

[alexzhang13]

I'm happy to merge this because the LBs on our server right now aren't really being used. We can just update the example kernels and the reference code once this is merged, just ping me.

[ngc92]

I guess the question is whether we should merge this to main, or try to gather more breaking changes and merge them all at once.