add Xchain-pruning-blocks-retained must be >= epochlength (#7963)

[philosup]

PR description

Fixed Issue(s)

fixes #7963

Thanks for sending a pull request! Have you done the following?

• Checked out our contribution guidelines?
• Considered documentation and added the doc-change-required label to this PR if updates are required.
• Considered the changelog and included an update if required.
• For database changes (e.g. KeyValueSegmentIdentifier) considered compatibility and performed forwards and backwards compatibility tests

Locally, you can run these tests to catch failures early:

• unit tests: ./gradlew build
• acceptance tests: ./gradlew acceptanceTest
• integration tests: ./gradlew integrationTest
• reference tests: ./gradlew ethereum:referenceTests:referenceTests

[jframe]

Thanks for your contribution.

Just one small suggestion to check other consensus mechanism that also have an epoch.

[jframe]

Ibft and Clique also have epochs and will have the same issue. Suggest using isPoa() here instead.

[jframe]

also need to check the epoch length for clique and ibft2 not just qbft.

Doing something this should work
`< (genesisConfigOptions.getBftConfigOptions().getEpochLength() || genesisConfigOptions.getCliqueConfigOptions.getEpochLength())

[philosup]

Modified to handle epochLength per consensus mechanism, as genesisConfigOptions.getCliqueConfigOptions().getEpochLength() returns a default value of 30000 even when Clique is not configured.