[5.3] Upmerge changes from 5.2-dev 2024-10-29#44367

Merged

richard67 merged 10 commits intojoomla:5.3-devfrom

richard67:5.3-dev-upmerge-2024-10-29

Oct 29, 2024

Commits on Oct 24, 2024

[cypress] Database Unix Sockets for System Tests (#44092)
muhme
authored

Commits on Oct 25, 2024

Add null check for search filter (#44349)

QuyTon
and
Quy
authored

Commits on Oct 26, 2024

[5.2] Fixed a set of options for the demo data plugin (#44166)
Kostelano
authored
[5.2] Fix Dart Sass deprecations (#44129)
C-Lodder
authored
Only add margin to system message container if it contains a joomla-alert (#44222)
coolcat-creations
authored