Changes design for empty related activity

[Iloveall]

Description

Fixes #1584

Notes (out of scope, known isues, hints for reviewing code, ...) (optional)

We are using alg-error for messages, so mb need to rename it

Test cases

• [ ] Case 1:
  1. Given I am the usual user
  2. When I go to this page
  3. Then I see new design for empty caption

[smadbe]

[auto-generated message] E2E test report on: https://algorea-static.s3.eu-central-1.amazonaws.com/branch/new-design/empty-related-activity-list/playwright-report/index.html