[Sessions Index] Update Session Information Format
### Problem
Update the existing Session items to the new format to include `Created date` and `Last update message..` as well as including the `Project name`
### Solution
Update the Sessions items to each have the following format:
```
{Status icon} {Project Name} / {Flow name} - {Session ID}
Created {# minutes ago}
{Last update message, single line, truncated} • {# minutes ago}
```
### Details
See the following Figma [link](https://www.figma.com/design/VqpH0V6joIOokfeXS71Yqz/Duo-Agent-Platform-Side-Panel?node-id=10725-13115&t=ARYn5N1nXA6QDe8Y-0) for designs.
issue