[Typescript-angular] responseType not set on Blob type responses

Description

If response is a blob (in schema defined with type string, format binary), the generated service fails to consume renspose (it tries to parse binary repsonse as blob):

       return this.httpClient.get<Blob>(`${this.basePath}/api/Image/DesignPreview`,
            {
                params: queryParameters,
                withCredentials: this.configuration.withCredentials,
                headers: headers,
                observe: observe,
                reportProgress: reportProgress
            }
        );

Swagger-codegen version

We are transitioning to aspnetcore3, with that we need to transition to swagger-codegen-cli-3.0.13
This issue did not exist in cli-2.4.1-SNAPSHOT with schema v2

Swagger declaration file content or url

Relevant schema part:

"responses": {
"200": {
"description": "Success",
"content": {
"image/png": {
"schema": {
"type": "string",
"format": "binary"
}
}
}
},
"401": {
"description": "Unauthorized"
},
"403": {
"description": "Forbidden"
}
},

Command line used for generation

java -jar swagger/swagger-codegen-cli-3.0.13.jar generate -i https://localhost:5001/swagger/0.1-Dev/swagger.json -l typescript-angular -c swagger/config.json -o src/app/api -D io.swagger.parser.util.RemoteUrl.trustAll=true -D io.swagger.v3.parser.util.RemoteUrl.trustAll=true

config.json:

{
    "ngVersion":"8"
}

Related issues/PRs

Very similar issue to #8399

Suggest a fix/enhancement

responseType: 'blob' and non generic httpClient.get should be used