Potential Bug: Re-check code for content dimension handling in MySQL / MariaDB

[erickloss]

see comment in \Sandstorm\KISSearch\Neos\Schema\NeosContentSearchSchema

-- FIXME why is this not unique? TODO -> understand what's unique here, I got unique key constraint errors after publishing to live and refreshing

[erickloss]

see

Sandstorm.KISSearch/src/Sandstorm.KISSearch.Neos/Classes/Schema/NeosContentSearchSchema.php

Line 471 in ad812ae

-- FIXME why is this not unique? TODO -> understand what's unique here, I got unique key constraint errors after publishing to live and refreshing