[BUG][Go] A path with multiple tags fails to compile with a redeclaration error

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

The generated Go code for an OpenAPI file with multiple tags for a single path fails to compile with a redeclaration error (redeclared in this block)

openapi-generator version

v4.2.6 and feeeedd34d4f3a83501825d025502874f669a6bc (Docker image openapitools/openapi-generator-cli@sha256:4396b434b09f03c9cb9a20ff39f1406f13a9b224a25e77a41679cd993eb5c968)

OpenAPI declaration file content or url

openapi: '3.0.3'

info:
  title: Multiple Tags
  version: 0.1.0

paths:
  /test:
    get:
      description: Test
      operationId: Test
      tags:
      - a
      - b
      responses:
        '200':
          description: OK

Generation Details

docker run --rm \
  -v ${PWD}:/local openapitools/openapi-generator-cli@sha256:4396b434b09f03c9cb9a20ff39f1406f13a9b224a25e77a41679cd993eb5c968 generate \
  -i /local/openapi.yaml \
  -g go \
  -o /local/out/go

Steps to reproduce

1. Generate the provided schema for go.
2. Try to build it.

Related issues/PRs

Suggest a fix

Start with the provided OpenAPI YAML and Docker generation command, generating the Go output for the path tagged with both a and b. Build the generated package and trace the duplicate declarations; done means the same multi-tag schema generates Go code without a redeclaration error.