Update to new Enzyme-JAX with new LLVM

[giordano]

Let's see how far we get.

[giordano]

@avik-pal only test failures are in sharding, can you please take a look?

[avik-pal]

locally building to test. But from a look at the failures, it seems the propagation algorithm has undergone some changes

[avik-pal]

the non-jll tests can be ignored for now

[giordano]

Just to know, is this ready to go or do you expect to do something else? Do we want to update Enzyme-JAX again? There are a bunch of more fixes we want soon. CC @wsmoses.

Also, I'd prefer to leave the Julia changes for a separate PR, having the "CI" jobs failing is problematic for most of the other PRs, we can live with the local build failing only.

[avik-pal]

yeah in that case let's get only the jll changes in and I will do the julia changes with the jll bump

[wsmoses]

per latency, concurrently starting the jll in the bg [on main, so we'll discard this PR after checking tests pass]

[wsmoses]

so @avik-pal feel free to do the julia changes now

[giordano]

Superseded by #984.