fix(aztec-up): always reinstall noirup and foundryup bootstrappers

[nchamo]

Problem

aztec-up install skipped re-downloading noirup and foundryup if they were already present on the user's machine. This meant returning users kept stale bootstrappers while new users got the latest ones.

When noirup gained support for downloading noir-profiler, users with an old noirup hit a hard failure at mv noir-profiler (the binary was never fetched). Existing users broke; new users didn't.

Fix

Remove the conditional guards around both bootstrapper installs. Every aztec-up install now unconditionally re-curls noirup and foundryup install scripts, ensuring every user ends up with the same bootstrappers versions regardless of prior state. The ~2-5s overhead is negligible compared to the rest of the install.

Fixes F-471

[nventuro]

users with an old noirup hit a hard failure at mv noir-profiler (the binary was never fetched)

I assume noirup also has no notion of versioning?

[nchamo]

users with an old noirup hit a hard failure at mv noir-profiler (the binary was never fetched)

I assume noirup also has no notion of versioning?

They have releases, but you can't run noirup --version and see what version you have installed. I considered using commit hashes to force a specific version, but then we would need to release a new aztec-up version to update the noirup version. Wouldn't be too bad, but since it's a manual process I thought it just made sense for all users to run with the latest version

If not, different users would have different experiences, based on their previous setup

[AztecBot]

✅ Successfully backported to backport-to-v4-next-staging #22075.