[Task]: Update icons for expiration and timelock

[nicole-obrien]

Task description

We now have separate icons for expiration and timelocks that are to be displayed on the activity tiles.

Requirements

• [ ] Add new expiration icon to activity tile
• [ ] Add new timelock icon to expiration tile

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