Unable to download htmlawed module with composer; type set to metapackage

Problem/Motivation

For Drupal 7, Composer version 2.4.4, PHP 7.4.33, running composer require drupal/htmlawed finds the packages but does not download it.

Package type is listed as "metapackage" would expect it to be "drupal-module":

composer show -all drupal/htmlawed
name     : drupal/htmlawed
descrip. :
keywords :
versions : 3.x-dev, 3.12.0, 3.11.0, 3.10.0, 3.9.0, 3.8.0, 3.7.0, 3.6.0, 3.5.0, 3.4.0, 3.3.0, 3.2.0, 3.1.0, 3.0.0, 2.x-dev, dev-2.x, dev-3.x
latest   : 3.12.0
type     : metapackage
license  : GNU General Public License v2.0 or later (GPL-2.0-or-later) (OSI approved) https://spdx.org/licenses/GPL-2.0-or-later.html#licenseText
homepage : https://www.drupal.org/project/htmlawed
source   : []
dist     : []
names    : drupal/htmlawed

support
source : https://git.drupalcode.org/project/htmlawed

requires
drupal/drupal ~7.0

Steps to reproduce

Using composer.json file:

$ ls
composer.json
$ cat composer.json
{
    "repositories": [
        {
            "type": "composer",
            "url": "https://packages.drupal.org/7"
        }
    ]
}

Run composer require drupal/htmlawed:

$ composer clear
$ composer require drupal/htmlawed
Using version ^3.12 for drupal/htmlawed
Info from https://repo.packagist.org: #StandWithUkraine
./composer.json has been updated
Running composer update drupal/htmlawed
Loading composer repositories with package information
Updating dependencies
Lock file operations: 2 installs, 0 updates, 0 removals
  - Locking drupal/drupal (7.94.0)
  - Locking drupal/htmlawed (3.12.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 2 installs, 0 updates, 0 removals
  - Downloading drupal/drupal (7.94.0)
  - Installing drupal/drupal (7.94.0): Extracting archive
  - Installing drupal/htmlawed (3.12.0)
Generating autoload files
No security vulnerability advisories found

$ cat composer.json
{
    "repositories": [
        {
            "type": "composer",
            "url": "https://packages.drupal.org/7"
        }
    ],
    "require": {
        "drupal/htmlawed": "^3.12"
    }
}

On completion expect vendor/drupal/drupal and vendor/drupal/htmlawed directories to exists, however only vendor/drupal/drupal is downloaded:

$  ls vendor/drupal
drupal

For comparison other modules work as expected e.g. composer require drupal/ckeditor:

$ composer require drupal/ckeditor
Using version ^1.22 for drupal/ckeditor
Info from https://repo.packagist.org: #StandWithUkraine
./composer.json has been updated
Running composer update drupal/ckeditor
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking drupal/ckeditor (1.22.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Downloading drupal/ckeditor (1.22.0)
  - Installing drupal/ckeditor (1.22.0): Extracting archive
Generating autoload files
No security vulnerability advisories found

$ cat composer.json
{
    "repositories": [
        {
            "type": "composer",
            "url": "https://packages.drupal.org/7"
        }
    ],
    "require": {
        "drupal/htmlawed": "^3.12",
        "drupal/ckeditor": "^1.22"
    }
}

$  ls vendor/drupal
ckeditor drupal

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes