Feature Request: Jetpack Stats - Exclude Chrome Lighthouse insights visits

### Impacted plugin

Jetpack

### What

Exclude Chrome Lighthouse insights visits from Jetpack Stats

### How

"Chrome Lighthouse" is no longer included in the user agent, see https://github.com/GoogleChrome/lighthouse/issues/14917#issuecomment-1480328571, so we can't rely on it to filter out traffic.

@kangzj suggested creating some sort of bot detecting feature to exclude Chrome Lighthouse.
Internal reference: [9303-gh-Automattic/jpop-issues/](https://github.com/Automattic/jpop-issues/issues/9303)

Start by locating the Jetpack Stats traffic-filtering entry point and review the linked Chrome Lighthouse discussion and internal reference. Done means Lighthouse insights visits are reliably excluded despite the missing user-agent marker, with the detection approach and validation criteria established.

Written by the indexing model from the issue text.