fix(ci): checkout submodules in consume_release monad-execution override

[pdobacz]

🗒️ Description

The Override monad-execution step replaces the monad-execution checkout that the recursive harness checkout produced, but it did not initialize monad-execution's own third_party/* submodules. build.sh then failed. Adding submodules: recursive to the override checkout matches the harness and monad-bft override steps.

Greptile Summary

This PR fixes the consume_release workflow’s monad-execution override checkout.

• Enables recursive submodule initialization for the overridden monad-execution repository.
• Aligns the checkout with the existing harness and monad-bft override steps so vendored dependencies are available to build.sh.

Confidence Score: 5/5

The PR appears safe to merge, with the workflow change correctly restoring required nested dependencies.

The override previously replaced the recursively initialized monad-execution directory without initializing the replacement repository’s own submodules; the added checkout option fixes that omission and matches the established neighboring checkout configuration.

Important Files Changed

Filename	Overview
.github/workflows/consume_release.yaml	Adds recursive submodule checkout to the monad-execution override, consistently with the surrounding nested repository checkout flow.

_{Reviews (1): Last reviewed commit: "fix(ci): checkout submodules in consume_..." | Re-trigger Greptile}

[pdobacz]

Validated by running the workflow from this branch https://github.com/monad-developers/execution-specs/actions/runs/30357451241