Add elastic/elastic-otel-rum-js to assembler and navigation configs

[alexandra5000]

Onboards the elastic/elastic-otel-rum-js repository to the docs site by:

• Adding it to assembler.yml alongside the other EDOT SDKs
• Adding release notes and reference entries to navigation.yml under the EDOT SDKs section

Related

• Add EDOT Browser SDK to EDOT SDKs documentation opentelemetry#568
• Add EDOT Browser (RUM) as applies_to product for preview badges #2913 - NEEDS TO BE MERGED FIRST
• Add EDOT Browser documentation elastic-otel-rum-js#36
• Add EDOT Browser SDK (elastic-otel-rum-js) to docs docs-content#5566

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: e885729e-1426-4c94-841e-a5e1e38059cb

📥 Commits

Reviewing files that changed from the base of the PR and between cbf74f5 and b857057.

📒 Files selected for processing (2)

• config/assembler.yml
• config/navigation.yml

---

📝 Walkthrough

Walkthrough

The pull request adds configuration and navigation entries to support a new elastic-otel-rum-js documentation reference. A new repository entry is added to config/assembler.yml, and two navigation TOC entries are added to config/navigation.yml to expose EDOT Browser (RUM) release notes and reference documentation under the existing observability documentation hierarchy.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: adding elastic-otel-rum-js to assembler and navigation configs, which directly matches the changeset.
Description check	✅ Passed	The description is directly related to the changeset, clearly explaining the onboarding of elastic-otel-rum-js with specific details about changes to assembler.yml and navigation.yml.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[cotti]

👍