fix(sequencer): disable default features in dependent crates

[sveitser]

Add default-features = false to sequencer dependencies in:

• slow-tests
• tests
• light-client-query-service
• light-client (dev-deps)
• crates/builder (dev-deps)

This prevents feature unification from enabling all sequencer version features (fee, pos, drb-and-header, da-upgrade) when building with specific features only.

[gemini-code-assist]

Summary of Changes

Hello @sveitser, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the dependency management for the sequencer crate by explicitly setting default-features = false in its various dependent Cargo.toml files. This crucial adjustment prevents unintended feature unification, ensuring that only the features explicitly requested for sequencer are compiled, thereby maintaining build integrity and avoiding unnecessary feature bloat.

Highlights

• Dependency Feature Management: Explicitly disabled default features for the sequencer dependency in several Cargo.toml files across various crates (slow-tests, tests, light-client-query-service, light-client, and crates/builder).
• Preventing Feature Unification Issues: This change addresses an issue where feature unification could inadvertently enable all sequencer version features (e.g., fee, pos, drb-and-header, da-upgrade) even when only specific features were intended to be built.

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[gemini-code-assist]

Code Review

This pull request correctly disables default features for the sequencer dependency in several crates to prevent unintended feature unification. The changes are correct and align with the PR's goal. I've added one comment about a small, unrelated change. As a suggestion for a potential follow-up, you might want to check if espresso-dev-node/Cargo.toml also needs default-features = false for its sequencer dependency.

[gemini-code-assist]

This reordering of dependencies seems unrelated to the main purpose of this pull request, which is to disable default features. To keep commits focused and atomic, it's generally better to move such stylistic changes to a separate PR.