Compilation errors with UE_NET_ENABLE_REPLICATIONREADER_LOG enabled

Enabling UE_NET_ENABLE_REPLICATIONREADER_LOG results in the following errors:

{{4>[1/5] Compile [x64] ReplicationReader.cpp
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C2065: 'UpdatedHandles': undeclared identifier
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C3553: decltype expects an expression not a type
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C2062: type 'unknown-type' unexpected
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C2653: 'UE_FMT_STR_Checker': is not a class or namespace name
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C3861: 'Check': identifier not found
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): error C2131: expression did not evaluate to a constant
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): note: failure was caused by a read of an uninitialized symbol
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): note: see usage of 'UE::Core::Private::FormatStringSan::FResult::Status'
4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Iris\ReplicationSystem\ReplicationReader.cpp(2089): fatal error C1903: unable to recover from previous error(s); stopping compilation}}

Enable UE_NET_ENABLE_REPLICATIONREADER_LOG and rebuild the project.

[UE-23848] Bug Status

Fix UE-51650

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