`default` property does not make the property required when defining the property via reference

[mitja-hofer]

The functionality that a property with a set default value is treated as required or non-optional does not work when defining the set property via a reference.

For example,

Currently a schema defined like:

{
  type: "object",
  properties: {
    value: { type: "number", default: 5 },
  },
  additionalProperties: false,
}

results in this type:

{
  value: number
}

However, when defining via reference, this functionality does not work.

{
  type: "object",
  definitions: {
    Value: { type: "number", default: 5 },
  }
  properties: {
     value: { $ref: '#/definitions/Value' },
  },
  additionalProperties: false,
}

Resolves to type

{
  value?: number | undefined
}

I believe this is unwanted behaviour but please feel free to correct me with my usage.