SanitizationFilter allows html5 details and summary (Issue #21605)

What does this MR do?

Sanitizes details and summary elements. This enables long logs and other details to be collapsed.

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Screenshots (if relevant)

Tasks

• Feature specs
• Consider security implications
• Fix display of pre style code blocks within details
• Check other types of markdown within summary

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing

What are the relevant issue numbers?

Closes #21605 (closed)