profiling: add missing transaction explanation

[JonasBa]

DESCRIBE YOUR PR

Add an explanation as to why txn data is missing on profiling page

IS YOUR CHANGE URGENT?

Help us prioritize incoming PRs by letting us know when the change needs to go live.

• Other deadline:

SLA

• Teamwork makes the dream work, so please add a reviewer to your PRs.
• Please give the docs team up to 1 week to review your PR unless you've added an urgent due date to it.
  Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

EXTRA RESOURCES

• Sentry Docs contributor guide

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2024 0:42am

2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
changelog	⬜️ Ignored (Inspect)	Visit Preview		Nov 14, 2024 0:42am
develop-docs	⬜️ Ignored (Inspect)	Visit Preview		Nov 14, 2024 0:42am

[codecov]

Bundle Report

Changes will decrease total bundle size by 15 bytes (-0.0%) ⬇️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-server-cjs	8.59MB	9 bytes (-0.0%) ⬇️
sentry-docs-client-array-push	8.94MB	6 bytes (-0.0%) ⬇️

[lizokm]

Thanks for adding!! It would be great if you could add a screenshot of the page with the banner showing. Also, it might be good to add a little bit more detail about what profiling without tracing might be good for versus profiling with tracing.