Prevent sending coin if the contract is inactive.

[zemyblue]

Summary

Even If a contract is inactive, coin transfer is possible. It should not be remitted.

https://github.com/line/lbm-sdk/blob/a58c60d1110239c77616e22b5702f0646ccb3b76/x/wasm/keeper/keeper.go#L1014-L1026

[zemyblue]

To send coin to contract use Send function of Bank module without any other related modules. And the way to restrict the inactive contract recipient is to add to blockedAddrs of bankmodule. But this blockedAddrs is just used to restrict to send some module. So, it is not proper in this case.

Is there any way to add this issue without modify bank module?

[zemyblue]

I'll create bankplus module that is wrapped bank module.

The main feature of bankplus

• restrict the transfer if recipient is contract and inactive.
• manage blockedaddr which include inactive contract list.