[enhancement] Maestro: Chat scroll tests are non-functional on empty states

[vriesdemichael]

The flow attempts to test scrolling with swipe actions, but because the session is newly created and empty, there is nothing to scroll. The screenshots for 'opened', 'scrolled', and 'top' are identical.

Proposed Solution:

• Seed the test session with multiple messages before testing scroll behavior.
• Or only run scroll tests on a pre-populated session.