Describe the bug
When in "Last activity" -page, if component's activity list is empty, displays text: "This participant does not have any activity yet.".
To Reproduce
Steps to reproduce the behavior:

1. Go to '"Last activity"'
2. Click on 'Any component with no activity'
3. See error

Expected behavior
The text should be more fitting for the page, e.g. "This component does not have any activity yet."

Screenshots

Extra data (please complete the following information):

• Device: Desktop
• Device OS: Ubuntu 22
• Browser: Chrome
• Decidim Version: 0.28.0.dev
• Decidim installation: Alpha Try Decidim