[BUG][TypeScript Angular] delete operation is broken

Description

The delete operations are broken. POST, PATCH and PUT supports a body as the second parameter of the call, with the options being at the third position. DELETE, however, requires the body to be put into the second option parameter.

See also:
https://angular.io/api/common/http/HttpClient

openapi-generator version

5.3.1

Generated typescript code

        return this.httpClient.delete<any>(`${this.configuration.basePath}/thingy`,
          null,
            {
                context: localVarHttpContext,
                responseType: <any>responseType_,
                withCredentials: this.configuration.withCredentials,
                headers: localVarHeaders,
                observe: observe,
                reportProgress: reportProgress
            }
        );

Expected typescript code

        return this.httpClient.delete<any>(`${this.configuration.basePath}/thingy`,
            {
                context: localVarHttpContext,
                responseType: <any>responseType_,
                withCredentials: this.configuration.withCredentials,
                headers: localVarHeaders,
                observe: observe,
                reportProgress: reportProgress,
                body: null
            }
        );

Use the reported generated TypeScript Angular delete call as the reproduction and read the Angular HttpClient.delete signature linked in the issue. Inspect the TypeScript Angular generator entry point that emits this call, then verify that generated DELETE requests place options, including the body, in the expected argument position.