Fix circulating_supply ValueError, and fix custom color payload

[shadowv0vshadow]

1. circulating_supply must use atomcal-value, not utxo value,
2. fix custom color payload: payload must be safely convert to int, it can't be float. If it cannot be correctly converted to an integer, it will be assigned a value of 0.

[wizz-wallet-dev]

fix custom color payload: payload must be safely convert to int, it can't be float. If it cannot be correctly converted to an integer, it will be assigned a value of 0.

@shadowv0vshadow Does it involves reindex?

[wizz-wallet-dev]

LGTM per above comment