Summary of changes:

• Removed LedgerStateAccess.participantId so that we can reuse submission validators.
• Renamed LedgerReader.retrieveLedgerId to ledgerId to be in line with naming conventions..

Pull Request Checklist

• Read and understand the contribution guidelines
• Include appropriate tests
• Set a descriptive title and thorough description
• Add a reference to the issue this PR will solve, if appropriate
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• Normal production system change, include purpose of change in description

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