POTEL 52 - Do not ignore certain span origins for OTel without Agent

[adinauer]

📜 Description

• Do not ignore certain span origins for OTel without Agent
• Add a separate sample for "no agent" use case

💡 Motivation and Context

• Not all auto instrumentation is there for the Spring setup without an agent
• Avoids having to change a single sample back and forth.

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

…or no agent

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- POTEL 52 - Do not ignore certain span origins for OTel without Agent ([#3856](https://github.com/getsentry/sentry-java/pull/3856))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against 2a28512

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	470.16 ms	498.78 ms	28.62 ms
Size	1.70 MiB	2.36 MiB	670.63 KiB

Baseline results on branch: feat/spring-boot-autoconfig-for-otel-no-agent

Startup times

Revision	Plain	With Sentry	Diff
fe6463f	408.02 ms	421.84 ms	13.82 ms

App size

Revision	Plain	With Sentry	Diff
fe6463f	1.70 MiB	2.36 MiB	670.64 KiB