[CSHARP] 3.x array schema doesnt work - always is Object

Description

Array types always translated to "Object", even if nested inside an actual object schema.

DefaultApi.cs, supposed to return an array of strings.

        Object GetArray ();

Test2.cs, arr is an array of strings.

        /// <summary>
        /// Gets or Sets Arr
        /// </summary>
        [DataMember(Name="arr", EmitDefaultValue=false)]
        public Object Arr { get; set; }

Swagger-codegen version

3.0.36

Swagger declaration file content or url

https://gist.github.com/ShoryuKyzan/02bfa48e1b82ca937150467644da56c3

Command line used for generation

java -jar swagger-codegen-cli-3.0.36.jar generate \
        -i swagger.json \
        -l csharp \
        -o api-gen

openjdk 19.0.1 2022-10-18                                           
OpenJDK Runtime Environment (build 19.0.1+10-21)                    
OpenJDK 64-Bit Server VM (build 19.0.1+10-21, mixed mode, sharing)  

Windows 10

Steps to reproduce

Run the above commands

Related issues/PRs

N/A

Suggest a fix/enhancement

?

Run the supplied swagger-codegen 3.0.36 command against the linked Swagger declaration and inspect the generated DefaultApi.cs and Test2.cs. Trace how the array schemas become Object; done means the generated method and property use an appropriate string-array type, with a regression test covering both cases.