[BUG] [typescript-axios] Query params enum created wrong

Bug Report Checklist

• 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?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?

Description

Wrong enum generated based on query param sort in line 1647

{
   "in":"query",
   "name":"sort",
   "schema":{
      "type":"string",
      "enum":[
         "<id",
         ">id",
         "<name",
         ">name",
         "<code",
         ">code",
         "<description",
         ">description",
         "<start_date",
         ">start_date",
         "<end_date",
         ">end_date",
         "<allowed_uses",
         ">allowed_uses",
         "<current_uses",
         ">current_uses",
         "<discount",
         ">discount",
         "<type",
         ">type"
      ],
      "description":"Sort of one property",
      "example":"<id"
   }
}

Result:

export enum CouponQueryParamsSortEnum {
    Id = '<id',
    Id = '>id',
    Name = '<name',
    Name = '>name',
    Code = '<code',
    Code = '>code',
    Description = '<description',
    Description = '>description',
    StartDate = '<start_date',
    StartDate = '>start_date',
    EndDate = '<end_date',
    EndDate = '>end_date',
    AllowedUses = '<allowed_uses',
    AllowedUses = '>allowed_uses',
    CurrentUses = '<current_uses',
    CurrentUses = '>current_uses',
    Discount = '<discount',
    Discount = '>discount',
    Type = '<type',
    Type = '>type'
}

openapi-generator version

5.2.1

OpenAPI declaration file content or url

https://gist.github.com/exejutable/f16d52315a95d95705ef6b694d962981

Generation Details

openapi-generator-cli generate -g typescript-axios -o src -i openapi.json

Start with the linked OpenAPI declaration and run the provided typescript-axios generation command against it. Trace the typescript-axios enum generation that produces duplicate member names for the query parameter values. Done means the generated enum has valid distinct member names while preserving all listed values, verified against the reported output.