Wallet: (Refactor) GetBalance to calculate used balance
Add GetFullBalance() to compute used balance in getbalances RPC and on GUI GUI PR #775
_Check https://github.com/bitcoin/bitcoin/pull/28776#discussion_r1407875236 by @achow101_
However, I think it would be better to move all of this into
GetBalanceitself and just have it always compute the used balance for us rather than having the caller do this extra computation.
Update:
- Compute
usedbalance fromGetBalance(...)