Merge branch '484-improve-search-suggestions' into 'main'

Remove common pages (homepage/search) and add latest search query

Closes #484

See merge request !1393



Merged-by: Pearl Latteier <platteier@gitlab.com>
Approved-by: Pearl Latteier <platteier@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Co-authored-by: Hiru Fernando <hfernando@gitlab.com>