Ensure sufficient storage before depositing a moment

[jrkhan]

Issue To Be Solved

When a moment is about to be deposited into a custodial wallet, it would be helpful if the transaction not to fail due to insufficient account storage.

(Optional): Suggest A Solution

One option is to simply check for this in the deposit (see PR) Other options, would be to systematically add it to each of our txs -> however there is no guarantee a third party would use our tx.