[Bug]: ToolChoice Required choice missing

[castortech]

What happened?

In ChatNodeBase we have: toolChoice?: 'none' | 'auto' | 'function'; But in later on in the same file we have another choice "Required":

options: [
              { value: '', label: 'Default' },
              { value: 'none', label: 'None' },
              { value: 'auto', label: 'Auto' },
              { value: 'function', label: 'Function' },
              { value: 'required', label: 'Required' },
            ],

why ?

What was the expected functionality?

Rivet did not work as expected!

Describe your environment

MacOS, Node 14.0.0, etc.

Relevant log output

Relevant screenshots

No response

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