[5.4] Don't insert duplicate records in update SQL scripts when they are executed multiple times#45973

muhme merged 2 commits intojoomla:5.4-devjoomla/joomla-cms:5.4-devfrom

richard67:5.4-dev-update-sql-no-duplicate-insertsrichard67/joomla-cms:5.4-dev-update-sql-no-duplicate-insertsCopy head branch name to clipboard