[Bug]: Entries in utility table disappearing

### Environment

prod (public)

### Page URL

https://prisma-demo.equinor.com/project/1834701a-1b2e-4806-865c-4e0e9b2f0a67/

### Developer access

- [x] I have given one of the developers access to the affected project.

### Problem description

I have an influence diagram in the public version
https://prisma-demo.equinor.com/project/1834701a-1b2e-4806-865c-4e0e9b2f0a67/

I have set the utility of seismic - yes to 0 and 2 of the utility table (reward) disappeared

### Proposed solution

Modifications of values (probabilities or values) in the ID shouldn't be removed entries in any tables.