Undeclared dependency - fails without menu_link_content enabled

Problem/Motivation

This module has a dependency on the link_uri plugin provided by menu_link_content. Without that module enabled, you will get `Drupal\Component\Plugin\Exception\PluginNotFoundException: The "link_uri" plugin does not exist. `

Steps to reproduce

Enable module without menu_link_content enabled, try to run an import.

Proposed resolution

Use a different plugin provided by this module rather than link_uri
or declare the dependency in the info file

Remaining tasks

User interface changes

API changes

Data model changes