[Bug]: tsp-openapi3: "deprecated" decorators not imported

[Arithmomaniac]

Describe the bug

OpenAPI that declares @deprecated does not result in #deprecated on import.

detected as part of the "TypeSpec for Sefaria" hack.

Reproduction

Easiest way to see is to round-trip this model:

model Foo {
  #deprecated "omit"
  bar?: string
}

TSP -> OpenAPI: Playground
Result from importing the OpenAPI output: Playground

model Foo {
  bar?: string;
}

Checklist

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• The provided reproduction is a minimal reproducible example of the bug.