Index lcp.element as a tag

[sdzhong]

Is there an existing issue for this?

• [x] I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• [x] I have reviewed the documentation https://docs.sentry.io/
• [x] I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/browser

SDK Version

8

Framework Version

No response

Link to Sentry event

No response

Reproduction Example/SDK Setup

Please see https://demo.sentry.io/performance/summary/tags/?project=5808623&query=&statsPeriod=14d&tagKey=backendType&transaction=%2Fproducts:

Steps to Reproduce

https://github.com/user-attachments/assets/bdb15e9a-3629-449c-bd33-0588d3b2b596

Expected Result

lcp.element and other lcp.* tags appear for the transaction

Actual Result