Experiment Metric List Shows First Step In Metric, Not Metric Name In Running Time Calc

[kyleswank]

Bug Description

You can see in the following screenshot. The first metric listed "blah" is a primary metric in the experiment and that's the name of it, it's not shared.

Below though are two shared metrics, each shows the first event in the funnel (in this case) rather than the name of the shared metric. A ticket has two shared metrics that each have the same first event in the funnel, leading to them being unidentifiable between the two metrics in this view.

How to reproduce

1. Create a new shared metric, give it a name, set the type to funnel, set the first event
2. Create a second shared metric, give it a different name, set the type to funnel, set the first event to the same as the first one in step 1
3. Create an experiment, add both metrics, then calculate running time. You'll see something similar to the above screenshot

Additional context

Debug info

- [x] PostHog Cloud, Debug information: [please copy/paste from https://us.posthog.com/settings/project-details#variables or https://eu.posthog.com/settings/project-details#variables]
- [ ] PostHog Hobby self-hosted with `docker compose`, version/commit: [please provide]
- [ ] PostHog self-hosted with Kubernetes (deprecated, see [`Sunsetting Kubernetes support`](https://posthog.com/blog/sunsetting-helm-support-posthog)), version/commit: [please provide]