remove outdated checks

[mikhailUshakoff]

• Remove the check that PreconfRouter is configured in TaikoWrapper contract.
• Remove reading HANDOVER_WINDOW from PreconfRouter contract.

[Copilot]

Pull request overview

Removes now-obsolete PreconfRouter-related checks from the pacaya operator flow and simplifies L1 execution layer implementations accordingly, aligning behavior with the updated contract/config expectations.

Changes:

• Removes PreconfOperator trait APIs related to checking TaikoWrapper’s PreconfRouter configuration and reading handover window slots.
• Simplifies Operator::get_status by removing the TaikoWrapper PreconfRouter check and per-epoch handover window slot reload logic.
• Updates Shasta/RealTime execution layers and pacaya tests to match the streamlined PreconfOperator interface; bumps workspace version to 1.39.3.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
shasta/src/l1/execution_layer.rs	Drops removed PreconfOperator methods from Shasta execution layer implementation.
realtime/src/l1/execution_layer.rs	Drops removed PreconfOperator methods from RealTime execution layer implementation.
pacaya/src/node/operator/tests.rs	Updates mocks/tests to match the trimmed PreconfOperator interface and removed operator behaviors.
pacaya/src/node/operator/status.rs	Removes duration fields tied to deleted checks.
pacaya/src/node/operator/mod.rs	Removes PreconfRouter configuration check and handover window slot reload logic from get_status.
pacaya/src/l1/traits.rs	Removes deprecated PreconfOperator trait methods.
Cargo.toml	Bumps workspace package version to 1.39.3.
Cargo.lock	Updates lockfile versions to 1.39.3.

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