MLE-23744 implement optic fromDocs in node client

[stevebio]

Add tweaked auto-generated functions and classes for optic fromDocs plan builder. Modify PlanColumnBuilder by adding PlanColumnBuilderBase to allow chaining during column definitions. This follows the patch builder pattern. Move transitiveClosure function after annTopK to match auto-generated code and make diff easier.

[github-actions]

Copyright Validation Results
Total: 2 | Passed: 2 | Failed: 0 | Skipped: 0 | at: 2026-01-09 15:49:29 UTC | commit: 7cdc2ce

✅ Valid Files

• lib/plan-builder-generated.js
• test-basic/optic-fromDocs.js

✅ All files have valid copyright headers!

[stevebio]

One pattern breaker: I added "types.Node" as a new additional param type for the vector() function. This matches other functions like op.xs.decimal in that they can accept an xpath result node. This supports an optic pattern like this that seems vital for the node client within fromDocs:
...
op.vec.vector(op.xpath(op.context(), './embedding'))
...
This won't work in node unless types.Node is allowed to vector() function.
This pattern works in optic already.
Review the last test in optic-fromDocs and let me know if you think this is wrong.

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[rjrudin]

Ran the tests locally on the latest nightly build, looks good! The tests do a great job of documenting the feature.