cli wallet limited to vbank NAT assets

[dckc]

Describe the bug

In #8156 we're removing the limitation in the walletFactory contract to only vbank assets, which necessarily have AssetKind NAT. But agoric wallet show still has both assumptions.

To Reproduce

Steps to reproduce the behavior:

1. Run the upgrade test in feat: upgrade walletFactory to go beyond vbank assets #8147 that results in a Place NFT in gov1's wallet
2. agoric wallet show --from gov1 --keyring-backend=test
3. See the Place amount value rendered as null: "want":{"Places":["board04980",null]}

both in the balances...

  "purses": [                                                                                                                                                           
    ["board0074",0],                                                                                                                                                    
    ["board04980",null]                                                                                                                                                 
  ],

and in the offer summaries

["game1","join-1692302237720","2023-08-17T19:57:17.720Z","makeJoinInvitation",1,{"give":{"Price":["IST",0.25]},"want":{"Places":["board04980",null]},"payouts":{"Places":["board04980",null],"Price":["IST",0]}}]

Expected behavior

needs design

Platform Environment

@agoric/[email protected]