Fix(eos_designs): Revert changed behavior for management_eapi (#5112)

[carlbuchmann]

Change Summary

Cherry-pick #5112

Note, regenerated the follow files during cherry-pick:

• python-avd/pyavd/_eos_designs/schema/init.py
• python-avd/pyavd/_eos_designs/schema/eos_designs.schema.yml

[github-actions]

Review docs on Read the Docs

To test this pull request:

# Create virtual environment for this testing below the current directory
python -m venv test-avd-pr-5158
# Activate the virtual environment
source test-avd-pr-5158/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/carlbuchmann/avd.git@cherry-pick-5112#subdirectory=python-avd" --force
# Point Ansible collections path to the Python virtual environment
export ANSIBLE_COLLECTIONS_PATH=$VIRTUAL_ENV/ansible_collections
# Install Ansible collection
ansible-galaxy collection install git+https://github.com/carlbuchmann/avd.git#/ansible_collections/arista/avd/,cherry-pick-5112 --force
# Optional: Install AVD examples
cd test-avd-pr-5158
ansible-playbook arista.avd.install_examples