Disable withdrawal when user doesn't have any delegations

[fedekunze]

Describe the bug

Attempting to do a withdrawal without delegations renders the following error on the modal:

Withdrawal failed: JSON Missing msgs.

To Reproduce

1. Sign in with an account with no delegations
2. Click withdraw and try to submit the transaction

Expected behavior

Show a message that user needs to delegate to be able to withdraw.

[jbibla]

how can a user do a withdrawal of zero? doesn't that mean we're not validating the form?

[fedekunze]

there's no "form" we only display the total rewards as the message doesn't contain any amount field

[jbibla]

ah ok. so we should just show a message on the action modal when rewards = 0

[fedekunze]

When delegations.length = 0

[jbibla]

ohhhhhhh. yeah. but also when rewards = 0 i guess.

[fedekunze]

You get rewards on every block so I wouldn’t bother handling that case

[jbibla]

ah, i see what you're saying. i suppose we agree on what the outcome should be. i'll leave the implementation to you!