GrowthBook DevTools does not represent multiple visual changesets appropriately for visual experiments

[bttf]

Problem: Currently, when inspecting a Visual Experiment, if the Visual Experiment has multiple visual changesets, the DevTools extension will only render one of them.

Example Experiment w/ multiple visual changesets

DevTools rendering only one of them

Proposed solution: Ensure we render all visual changesets for an experiment and highlight the one that currently targets the page URL. (If none target the URL, notify the user via a small alert in the DevTools UI).