Configuration for cancel_path, delete_path is missing in config schema

Problem/Motivation

The Form step configuration form allows a site builder to enter a 'Cancel button URL' and 'Delete button URL'. However, these configuration options are not declared in the field_group.field_group_formatter_plugin.steps config schema.

Steps to reproduce

1. Install Drupal with Standard profile
2. Install Configuration inspector module
3. Add a Form step for Article and configure a 'Cancel button URL' and 'Delete button URL'
4. Go to /admin/reports/config-inspector/core.entity_form_display.node.article.default/list

Proposed resolution

Add cancel_path, delete_path configuration options to field_group.field_group_formatter_plugin.steps config schema

Remaining tasks

1. Write a patch
2. Review
3. Commit

User interface changes

None.

API changes

None.

Data model changes

None.