Add tests for `modules/people`, `modules/pipeline`, `modules/search` and `modules/settings`

[gitstart-twenty]

Scope & Context

This is a child issue of #2992 which addresses increasing test coverage for the front-end. This issue is for the increasing coverage for modules/people, modules/pipeline, modules/search and modules/settings

[gitstart-app[bot]]

Here is the GitStart Ticket for this issue: https://clients.gitstart.com/twenty/5449/tickets/TWNTY-3317