fix(ui): populate default values in join related doc drawer

[akhrarovsaid]

fixes #8612

I'm not convinced this was the cleanest way to solve this issue, however all other methods I tried induced an error in the form state builder or required larger, more laborious code changes.

[akhrarovsaid]

As an aside: Before I began working on this fix, I occasionally received ERROR: Could not find field schema for given path "undefined" errors somewhat sporadically while playing with the Join field. The errors triggered from clicking the Create New button and it was impossible to predict when they would happen. I can't seem to consistently reproduce these errors and they seem unrelated to this PR.

[DanRibbens]

As an aside: Before I began working on this fix, I occasionally received ERROR: Could not find field schema for given path "undefined" errors somewhat sporadically while playing with the Join field.

Probably need an optional chaining or early return in a hook during a render with missing props.

We have a few UI bugs with joins in our backlog. I hope to get some time this week for these.