Add CI check for headroom on ymax bundles #12215
Description
What
We need to know when we're getting close to the limit for submitting ymax bundles on a production chain (mainnet / devnet).
We probably want to know when the size get to more than 80% of the max.
Why
Heads-up so that we can plan the deployment of bundle chunking support to production chains.
How
Either:
- Explicit check of the bundle size (compressed), accounting for tx overhead
- Reduce the allowed tx size of the validator already used in CI for ymax