sso: update troubleshooting guide (#22001)

## Description
- Added troubleshooting guide for SSO group mapping:
https://deploy-preview-22001--docsdocker.netlify.app/security/troubleshoot/troubleshoot-sso/
- Moved old SSO troubleshooting guide to new file, added aliases
- Reformatted old SSO troubleshooting content to match new template

## Related issues or tickets
- [ENGDOCS-2367](https://docker.atlassian.net/browse/ENGDOCS-2367)

## Reviews
- [ ] Editorial review

[ENGDOCS-2367]:
https://docker.atlassian.net/browse/ENGDOCS-2367?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

Author: sarahsanders-docker

content/manuals/security/for-admins/single-sign-on/troubleshoot.md

@@ -0,0 +1,6 @@
+---
+build:
+  render: never
+title: Troubleshoot
+weight: 40
+---