Identify persistent classes with an INT id field in the cache invalidation system [FIXED]

[netroms (Morten Svanæs)]

I have made a fix for the issue here: fix: identify classes with an Integer ID field [DHIS2-16092] by netroms · Pull Request #15554 · dhis2/dhis2-core · GitHub
I will backport to the 2.40,2.39 and 2.38 versions.