apollo_gateway: insert optional versioned constant overrides to batcher

[itamar-starkware]

Make versioned_constants_overrides optional in BlockBuilderConfig.

What changed?

• Changed versioned_constants_overrides field in BlockBuilderConfig to be Option<VersionedConstantsOverrides> instead of VersionedConstantsOverrides
• Updated the default implementation to wrap the default value in Some()
• Modified the dump() method to handle the case when the value is None
• Updated the call to VersionedConstants::get_versioned_constants() to pass the option directly instead of wrapping it in Some()

Why make this change?

This change allows for more flexibility in configuration by making the versioned constants overrides optional. It maintains backward compatibility by preserving the default behavior while allowing users to explicitly opt out of providing overrides if desired.

[reviewable-StarkWare]

This change is 

[itamar-starkware]

• apollo_node_config: make top level version_constant_overrides optional #10286
• apollo_config: update config map by pointers skip optional values #10510
• apollo_gateway: insert optional versioned constant overrides to batcher #10285 👈 (View in Graphite)
• apollo_gateway: insert optional versioned constant overrides to gateway #10284
• apollo_batcher: make versioned constants override optional #10236
• main-v0.14.1

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[Itay-Tsabary-Starkware]

@Itay-Tsabary-Starkware reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @TzahiTaub)

[TzahiTaub]

@TzahiTaub reviewed 1 of 2 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @itamar-starkware)

---

crates/apollo_batcher_config/src/config.rs line 41 at r2 (raw file):

            proposer_idle_detection_delay_millis: Duration::from_millis(2000),
            // Preserve behavior by defaulting to Some(default overrides).
            versioned_constants_overrides: Some(VersionedConstantsOverrides::default()),

As in the GW, shiuld be None by default.

Code quote:

 versioned_constants_overrides: Some(VersionedConstantsOverrides::default()),

[Yoni-Starkware]

@Yoni-Starkware reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @itamar-starkware and @TzahiTaub)

---

crates/apollo_batcher_config/src/config.rs line 41 at r2 (raw file):

I think that this should either be None (and the default impl should be removed)

+1

[ShahakShama]

@ShahakShama reviewed 1 of 1 files at r3, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @itamar-starkware and @TzahiTaub)

[TzahiTaub]

@TzahiTaub reviewed 1 of 1 files at r3, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @itamar-starkware)

[TzahiTaub]

@TzahiTaub reviewed 2 of 2 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @itamar-starkware)

[TzahiTaub]

@TzahiTaub reviewed 2 of 2 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @itamar-starkware)

[itamar-starkware]

@itamar-starkware reviewed 2 of 4 files at r5, 2 of 2 files at r6, all commit messages.
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