Fixed modernize issues.

[alexeykiselev]

No description provided.

[Copilot]

Pull request overview

This PR applies a small modernization/refactor in pkg/proto by replacing manual reflect.New(...).Interface().(T) interface assertions with the newer reflect.TypeAssert[T](...) helper, keeping the same runtime behavior while simplifying the code.

Changes:

• Replace Interface().(T) assertions with reflect.TypeAssert[T](reflect.Value) for DataEntry, Transaction, and protocol Message construction.
• Update related tests to use the same reflect.TypeAssert pattern for snapshots and protocol marshalling.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
pkg/proto/types.go	Uses reflect.TypeAssert[DataEntry] when instantiating data entries from reflected types.
pkg/proto/transactions.go	Uses reflect.TypeAssert[Transaction] when constructing transactions from reflected types.
pkg/proto/snapshot_types_test.go	Updates snapshot test instantiation to use reflect.TypeAssert[proto.AtomicSnapshot].
pkg/proto/proto_test.go	Updates protocol marshalling tests to construct Message via reflect.TypeAssert[Message].

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