[BUG] [Csharp-SDK] EmitDefault for readonly property set to true when emitDefault is set to false in config file.

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
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• What's the actual output vs expected output?
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Description

The readonly property has the emitDeafult attribute true though in the config file it is set to EmitDefault = false.

openapi-generator version

OpenAPI declaration file content or url

"ConfigChangeDetails": {
                "description": "An array of relationships to serverConfigChangeDetail resources.",
                "type": "array",
                "items": {
                  "$ref": "#/components/schemas/server.ConfigChangeDetail.Relationship"
                },
                "nullable": true,
                "readOnly": true,
              }

(for JSON code), so it becomes more readable. If it is longer than about ten lines,
please create a Gist (https://gist.github.com) or upload it somewhere else and
link it here.

Generation Details

Steps to reproduce

the generated code for above property looks like this

        /// <summary>
        /// An array of relationships to serverConfigChangeDetail resources.
        /// </summary>
        /// <value>An array of relationships to serverConfigChangeDetail resources.</value>
        [DataMember(Name = "ConfigChangeDetails", EmitDefaultValue = true)]
        public List<ServerConfigChangeDetailRelationship> ConfigChangeDetails { get; private set; }

Related issues/PRs

Suggest a fix

the EmitDefault property should be false

Start with C# SDK generation for the provided read-only ConfigChangeDetails schema and the config setting that controls EmitDefault. Compare the generated DataMember attribute with emitDefault set to false; done when the readonly property emits EmitDefaultValue = false.