[Task]: Improve claiming flow to show pending state

[nicole-obrien]

Task description

Because claiming an output issues a new transaction we should keep the activity in a pending claim state until the claiming transaction is confirmed. Otherwise the transaction look confirmed straight away and there could also be a conflict.

Requirements

• [ ] Keep activity in claiming state until the claiming transaction has been confirmed

Creation checklist

• [ ] I have assigned this task to the correct people
• [X] I have added the most appropriate labels
• [X] I have linked the correct milestone and/or project