[Bug] aar-doc defaults generates `dict` for type of object `list of dict` when `options` was specified

[seamus-45]

Description

If an element is declared in arguments_specs.yml as a list of dictionaries and has both a default value and options, then the options are assigned to the variable instead of the default value. This results in a change in the variable type (dictionary instead of list) and an incorrect value.

Reproduction steps

1. Create a role with e.g. the following meta/argument_specs.yml:

argument_specs:
  main:
    short_description: Install php packages and modules
    options:
      php_ver:
        type: int
        required: true
        default: 84
        description: "php version without dots"
      php_additional_pools:
        type: list
        elements: dict
        required: false
        description: "additional php pools"
        default: []
        options:
          name:
            type: str
            required: true
            default: null
            description: "pool name"

2. Create the defaults using aar-doc:

$ aar-doc rolepath defaults

Current Behavior

The following invalid defaults file is generated:

---
# Automatically generated by aar-doc
# php version without dots
php_ver: 84
# additional php pools
php_additional_pools:
  # pool name
  name: null

Expected Behavior

aar-doc defaults should create:

---
# Automatically generated by aar-doc
# php version without dots
php_ver: 84
# additional php pools
php_additional_pools: []