Subtask of a Subtask issue type in Jira Work Management

Create a subtask of a subtask in Jira Work Management templates. Only the Software Project templates (Kanban, Scrum, Bug Tracking) uses a three-part hierarchy (EPIC, Issue, Child Issue). All of the other work management project (i.e. Project Management) only gives a two-part hierarchy (Task, Subtask). Having a third part (subtask of subtask) would allow the project to expand more. This request was previously removed a few years ago, before Jira Work Management was launched. Because we now have other types of templates outside the software projects, it would make sense now to make this addition to the hierarchy in work management templates.