Module reserve represents fractional balances, so it should be hidden to consumers to not have a misleading total balance that doubles the fractional balances. This modifies GetBalance() and SpendableCoin() to always return zero coins when fetching the reserve address balance for fractional amounts.
Emits the **total** akava amount for both ukava and akava send/mint/burns. If both akava,ukava are sent (not possible via x/evm nor cosmos messages but still an edge case), then the sum is emitted. No other denoms are emitted by x/precisebank as they will be emitted by the underlying x/bank
