[BUG][JAVA] Query param '$select' is URL encoded twice as '%2524select' instead of '%24select'

Description

Consuming the getTransactions method with a $select param with value "foo" results in a client calling something like

/transtactions%2524select=foo

instead of

/transtactions%24select=foo

openapi-generator version

7.3.0

OpenAPI declaration file content or url

{
  "openapi": "3.0.1",
  "info": {
    "title": "Test",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://some-url"
    }
  ],
  "paths": {
    "/transactions": {
      "get": {
        "tags": [
          "transactions"
        ],
        "operationId": "getAlltransactions",
        "parameters": [
          {
            "name": "$select",
            "in": "query",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "transactions response",
            "content": {
              "application/json": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }
    }
  }
}

Generation Details

Java - Resttemplate

Steps to reproduce

Related issues/PRs

Suggest a fix

The query params should not be URL encoded twice.
The expected result is

Start with Java Resttemplate generation using the supplied OpenAPI declaration and inspect how the $select query parameter becomes part of the request URL. Confirm the generated client sends %24select rather than %2524select, and add or update coverage for this declaration if the relevant test location is found.