POTEL 50 - Auto config for Spring Boot combined with OTel but without agent

[adinauer]

:scroll: Description

:bulb: Motivation and Context

:green_heart: How did you test it?

:pencil: 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.

:crystal_ball: Next steps

[github-actions[bot]]

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

	Messages
:book:	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 50 - Auto config for Spring Boot combined with OTel but without agent ([#3846](https://github.com/getsentry/sentry-java/pull/3846))

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

Generated by :no_entry_sign: dangerJS against 30c5ebd4623cedf2e4cefc369338b04aa14cbf6f

[github-actions[bot]]

Performance metrics :rocket:

	Plain	With Sentry	Diff
Startup time	384.00 ms	460.10 ms	76.10 ms
Size	1.65 MiB	2.31 MiB	672.57 KiB

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

Startup times

Revision	Plain	With Sentry	Diff
fe6463f7b9efd4d1edbd510a0f4646a4a3209070	408.02 ms	421.84 ms	13.82 ms
28031d4294b2b81aaa81f099e294073432dc943e	402.63 ms	443.26 ms	40.63 ms

App size

Revision	Plain	With Sentry	Diff
fe6463f7b9efd4d1edbd510a0f4646a4a3209070	1.70 MiB	2.36 MiB	670.64 KiB
28031d4294b2b81aaa81f099e294073432dc943e	1.65 MiB	2.31 MiB	672.60 KiB