Child-pipeline should run only when there is a task to run else avoid running it

GitLab CI/CD
1

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Problem to solve

The child-pipeline stage should run only whenever there are changes in the generate-config.yml file , else should not run or fail it coz sometimes like feature-branch we wont have any child-jobs to run

Problem is the child-pipeline doesn’t shows up

Configuration

.gitlab-ci.yml file …Below is for testing purpose

generate-config:
  stage: build
  before_script:
    - apt-get update -y
    - apt-get -y install git zip unzip wget jq apt-transport-https ca-certificates gnupg python3 > /dev/null 2>&1
  script: if [ -z ${TEAM+x} ]; then echo teams/data/terraform/variables.tf | python3 python/generate-jobs.py > generated-config.yml; else find teams/${TEAM} | python3 python/generate-jobs.py > generated-config.yml; fi

  artifacts:
    paths:
      - generated-config.yml

validate-generated-config:
  stage: validate
  script: |
    if [ -s generated-config.yml ]; then
      echo "Child pipeline configuration found."
    else
      echo "No child pipeline configuration found, skipping child pipeline trigger."
      rm -f generated-config.yml
      touch skip-trigger  # Indicate to skip the trigger.
    fi
  artifacts:
    paths:
      - generated-config.yml
      - skip-trigger
  needs:
    - generate-config
  tags:
    - aws
    - prd

child-pipeline:
  stage: apply-tf
  trigger:
    include:
      - artifact: generated-config.yml
        job: generate-config
  needs:
    - validate-generated-config
  rules:
    - exists:
        - generated-config.yml
    - when: never
      exists:
        - skip-trigger