[BIP-458] Enable 50GOLD/25USDC/25wstETH & 25GOLD/25BAL/25AURA/25wstETH [ARBITRUM]

[Xeonus]

https://snapshot.org/#/balancer.eth/proposal/0xc30fa0feac40a3df71d91e44af01215342ce2b2b7da35a95c763111b45053e6a