[FEATURE] Handle flow balance separately by using available balance

[Peppermint1020]

Basically, we need use available flow balance across our wallet for flow token balance. Which including move and send action.
In this way, even user use max amount. The balance won’t lower than 0.001 or the minimum storage requirement.
Currently, we query flow token balance along with other tokens together and its total balance.

We need handle flow balance separately by using available balance.