Known issues and limitations updated

[djw-m]

What Changed?

Updated according to previous notes from KI review. One issue moved to limitations. Some rewording on PGD5, most not resolved and no change of state.

[github-actions[bot]]

🚀 Deployed on https://deploy-preview-4283--edb-docs-staging.netlify.app

[djw-m]

Please review and validate this update to ensure it is correct. Do reference the old versions on the Known Issues and Limitations as part of the process. Thanks. This has been in review limbo for too long so...