fix: connection approval cannot exceed mtu size - backport (3564) #3565
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This PR resolves the issue where a NetworkConfig.ConnectionData that caused the ConnectionRequestMessage to exceed the transport's MTU size would result in a buffer overflow error by updating ConnectionRequestMessage to use the ReliableFragmentedSequenced pipeline as opposed to the ReliableSequenced pipeline.
MTTB-1467
Changelog
Testing and Documentation
ConnectionApprovalintegration tests to use a > MTU sizeNetworkConfig.ConnectionData.Backport
This is a back port of #3564.