[Broker] Fix replicated subscriptions related LightProto issues

[lhotari]

Motivation

While investigating the issue about geo replication, #10054 , I came across some issues with handling of some deserialized replicated subscriptions related messages. LightProto reuses thread local instances and therefore a copy must be made before sharing with other threads.

Modifications

• Make a copy of ReplicatedSubscriptionsSnapshot before adding it to ReplicatedSubscriptionSnapshotCache
• Make a copy of MarkersMessageIdData before adding it to responses map in ReplicatedSubscriptionsSnapshotBuilder

[lhotari]

@merlimat Please review.