Refactor(eos_designs)!: WAN default MTU set to 9194 for Dps and WAN HA interfaces and for LAN uplink interfaces added p2p_uplinks_mtu support in platform settings

Refactor(eos_designs)!: WAN default MTU set to 9194 for Dps and WAN HA interfaces and for LAN uplink interfaces added p2p_uplinks_mtu support in platform settings #14884