[TASK] Catch exceptions in itemsProcFunc

It may be helpful to let itemsProcFuncs for field (e.g. select, check
and radio types) throw exceptions that are caught and displayed
properly as error message.

Actually https://review.typo3.org/#/c/24066/ introduces such an
exception.

Releases: 6.2
Resolves: #52836
Documentation: #52839
Change-Id: Icabdc528668844d5713142f0aad2d3923742dd11
Reviewed-on: https://review.typo3.org/24786
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Peter Foerger
Tested-by: Peter Foerger
Reviewed-by: Francois Suter
Tested-by: Francois Suter