Accepting an invitation has non-obvious UX

### Current Behavior

When a user needs to accept an invitation the primary action to perform is hidden behind a kebab menu item.

### Expected Behavior

Per team invitation the user sees a big green and red button to either accept or reject the invite.

### Steps To Reproduce

_No response_

### Environment

- FlowForge version:
- Node.js version:
- npm version:
- Platform/OS:
- Browser:

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate