[RUM-8706] [V3] Expose `setAccountInfo` APIs

[cdn34dd]

What does this PR do?

Exposes setAccountInfo APIs to JS layer.

Review checklist (to be filled by reviewers)

• [ ] Feature or bugfix MUST have appropriate tests
• [ ] Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• [ ] Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)
• [ ] If this PR is auto-generated, please make sure also to manually update the code related to the change

[datadog-official[bot]]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

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