Context not rendered for inline product stage notifications

[colleenmcginnis]

Describe the bug

There's no context not rendered for inline product stage notifications (including both additions/deprecations and preview/beta/dev).

additions/deprecations

Here's an example of a feature that's deprecated in 8.15.0. When using docs-builder, there's no indication what relationship this feature has to 8.15.0:

AsciiDoc	docs-builder
Link	Link

preview/beta/dev

AsciiDoc	docs-builder
Link	Link

Expected behavior

Show some context with styling and/or a tooltip with text. See the Elastic docs AsciiDoc guide for more details.

Steps to reproduce

1. Build the observability-docs.md doc set
2. Go to http://localhost:3000/apm-collect-application-data.html#apm-collect-data-availability

Tooling

• docs-builder
• migration tooling
• I'm not sure

[bmorelli25]

Related to #94 (comment).