removed requirement for block headers in voluntary exit

[rolfyone]

Instead of using the block header we can compute the current slot from genesis data.

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

[greptile-apps]

PR Summary

Removed the requirement for block headers in voluntary exit operations, now computing the current slot from genesis data.

• Modified teku/src/integration-test/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommandTest.java to use genesis data for slot computation.
• Deleted teku/src/integration-test/resources/tech/pegasys/teku/cli/subcommand/voluntary-exit/genesis.json as genesis data is no longer required.
• Updated teku/src/main/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommand.java to compute the current epoch from genesis data.
• Removed getBlockHeader method from validator/remote/src/main/java/tech/pegasys/teku/validator/remote/apiclient/OkHttpValidatorRestApiClient.java.

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[greptile-apps]

PR Summary

(updates since last review)

Removed the requirement for block headers in voluntary exit operations, now computing the current slot from genesis data.

• Added shouldCreateExitForFutureEpochIfOutputFolderDefined test in teku/src/integration-test/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommandTest.java to verify future epoch exits.
• Modified teku/src/main/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommand.java to allow future epoch exits if voluntaryExitsFolder is specified.
• Updated validation logic in VoluntaryExitCommand.java to enhance flexibility while handling exit messages.

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[greptile-apps]

          ## PR Summary

          (updates since last review)


          Removed the requirement for block headers in voluntary exit operations, now computing the current slot from genesis data.

• Updated acceptance-tests/src/acceptance-test/java/tech/pegasys/teku/test/acceptance/MergedGenesisAcceptanceTest.java to use genesisExecutionPayloadHeaderSource for genesis payload.

• Modified acceptance-tests/src/testFixtures/java/tech/pegasys/teku/test/acceptance/dsl/GenesisGenerator.java to replace genesisPayloadSource with genesisExecutionPayloadHeaderSource.

• Enhanced modularity and configurability in genesis generation by using a function that takes a Spec and returns an ExecutionPayloadHeader.

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[tbenr]

LGTM but InvalidConfigurationException message needs to be updated

[greptile-apps]

PR Summary

(updates since last review)

Removed the requirement for block headers in voluntary exit operations, now computing the current slot from genesis data.

• Modified teku/src/main/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommand.java to update error messages reflecting the shift from block headers to genesis data for epoch calculation.
• Adjusted teku/src/integration-test/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommandTest.java to ensure genesis response configuration before executing voluntary exit commands.
• Added new test methods in teku/src/integration-test/java/tech/pegasys/teku/cli/subcommand/VoluntaryExitCommandTest.java to handle scenarios where genesis data is unavailable or the beacon node is not accessible.

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[greptile-apps]

PR Summary

(updates since last review)

Removed the requirement for block headers in voluntary exit operations, now computing the current slot from genesis data.

• Updated data/provider/src/main/java/tech/pegasys/teku/api/DataProvider.java to include recentChainData and spec in NodeDataProvider constructor.
• Enhanced data/provider/src/main/java/tech/pegasys/teku/api/NodeDataProvider.java with methods for handling attestations and metadata, and computing the current slot.
• Improved test coverage in data/provider/src/test/java/tech/pegasys/teku/api/NodeDataProviderTest.java by adding new test cases for getAttestationsAndMetaData and slot retrieval scenarios.

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