[BUG] Duplicated operations on multiple `tags`

Created by: andreaTP

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?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

All of the generators (but JavaMicronautServer) are emitting duplicated code in case of multiple tags.

openapi-generator version

latest

OpenAPI declaration file content or url

openapi: 3.0.3
info:
  title: Foo bar
  version: 1.0.0
servers:
- url: /
paths:
  /foo:
    get:
      tags:
        - foo
        - bar
      description: ok
      responses:
        default:
          description: ok
        '200':
          description: successful operation

Generation Details

Generating code from the specification above results in duplicated code/routes etc. and often compromises the correctness.

Steps to reproduce

examples:

openapi-generator generate -i openapi.yaml -g go
openapi-generator generate -i openapi.yaml -g typescript

You will find in the output files duplicated Apis (Foo.. and Bar...)