When data input parameters are allowed to be null, allow null #5585
Description
Describe the bug
[A clear and concise description of what the bug is.]
#4649 references this bug and it appears to have returned with the most recent devel pull.
To Reproduce
Steps to reproduce the behavior with a fresh installation
- Create a discovery network
- set up criteria to add "Advanced Ping"
- discover the network and watch logs.
- See error.
Additional context
2023-11-18 19:56:04 - AUTOM8 NOTE: Device[MF8500C Series], GT[PING - Advanced Ping] Graph not added due to no default value for overridable field.
2023-11-18 19:56:04 - AUTOM8 NOTE: Device[[MF8500C Series](http://devel.cacti.domain.com/host.php?action=edit&id=27)], GT[[PING - Advanced Ping](http://devel.cacti.domain.com/graph_templates.php?action=template_edit&id=286)] Graph not added due to no default value for overridable field.