Problem/Motivation
The Account Settings form has a lot of email templates, each one presented as a vertical tab.
There is no at a glance information provided to help identify which email templates are enabled, other than to navigate through the tabs one-by-one.
This was identified as a problem during #3263897: Drupal Usability Meeting 2022-02-18 while reviewing #85494: Use email verification when changing user email addresses.
Steps to reproduce
Proposed resolution
The vertical tabs support the ability to provide contextual information below the tab title, this could be used to indicate which email templates are enabled and which are disabled.
An example of this pattern being used is the block visibility conditions section of block configuration:

Remaining tasks
User interface changes
API changes
Data model changes
Release notes snippet
Comments