Teamwork task: Handle uninstalling streaming payments with active/unclaimed streams

Steps to reproduce

1. Ensure the Streaming payments extension is enabled.
2. Create some Streams, ensure some remain active and some have unclaimed funds.
3. Try to fully uninstall the Streaming payments extension.
4. Note the uninstallation modal, and the transaction error in the console.

Expected behaviour

• The uninstallation modal for the Streaming payments extension should be accurate to the design.
• The uninstallation modal for the Streaming payments extension should:
  • Stop users from uninstalling if there are active streams or funds that are unclaimed.
• Figma link for if funds are unclaimed or there are active streams - https://www.figma.com/design/6qONTE1uD9K4yoIbfFzidg/Extensions?node-id=2577-21798&t=pBxKqAMMDZa3BSiC-4
• Figma link in all other cases, allowing uninstalling - https://www.figma.com/design/6qONTE1uD9K4yoIbfFzidg/Extensions?node-id=2575-17777&t=pBxKqAMMDZa3BSiC-4

Actual behaviour

• The uninstallation modal is incorrect when uninstalling Streaming Payments.
• The Streaming payments unisntall modal does not correctly handle when streams are active.
• You are no being prevented from uninstalling when there are active streams.