### What?
Fixes the issue when visiting the create view with the Join Field and
using postgres adapter
```
invalid input syntax for type integer: "NaN"
```
This happens because we don't have an ID yet and we send to the
database:
`WHERE id = NaN`
### How?
Avoids calling `getTableState` inside of `RelationshipTable` if there's
no ID yet, as it will always lead to the same empty result. While we
_could_ avoid error directly in the database adapter, I don't think we
should do that render request
Fixes https://github.com/payloadcms/payload/issues/9193
ef2475d804
