[CSHARP] Fix how the array type is set when using NULLABLE_REFERENCE_TYPES · OpenAPITools/openapi-generator@611f10c

Failed to save: "C:\Program failed with error: The process 'C:\Program Files\Git\usr\bin\tar.exe' failed with exit code 2

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Restore Gradle distribution 8.14.3 failed: Error: Cache service responded with 400