Merge branch '644-error-in-ce-colum-size-render-type-select' into 'main'

Resolve "Error in CE Colum Size - render type select"

Closes #644

See merge request t3o/t3olayout!597

Configuration/TCA/Overrides/tt_content_ce_TextMedia.php

@@ -6,6 +6,7 @@ $ce_textmedia = [
         'label' => 'Colum Size',
         'config' => [
             'type' => 'select',
+            'renderType' => 'selectSingle',
             'items' => [
                 ['50/50', '6'],
                 ['70/30', '8'],