* Fix for preserving pki_encrypted and public_key when relaying UDP multicast packets to radio.
PKI DMs sent over UDP multicast had their pki_encrypted flag and public_key fields explicitly cleared before being forwarded to the LoRa radio. This caused the receiving node to treat the packet as a channel-encrypted message it couldn't decrypt, silently dropping it.
The MQTT ingress path correctly preserves these fields. The UDP multicast ingress path should behave the same way.
* Zeroize MeshPacket before decoding
Zeroize MeshPacket before decoding to prevent data leakage.
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
