Deserialising null to JsonNode in nested structures fails in System.Text.Json

`JsonSerializer.Deserialize<JsonNode>("null")` returns null
`JsonSerializer.Deserialize<List<JsonNode>>("[null]")` throws
`JsonSerializer.Deserialize<Dictionary<string, JsonNode>>("{ \"Foo\": null }")` throws

Assuming this isn't intentional? Reproducible in .Net 6 & 7.