[fix][ml] Remove duplicated field initialization of ML

[dao-jun]

Motivation

managedLedgerInterceptor of ManagedLedgerImpl initialized twice, remove one

Modifications

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This change is a trivial rework / code cleanup without any test coverage.

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• Added integration tests for end-to-end deployment with large payloads (10MB)
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• Dependencies (add or upgrade a dependency)
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