fix(a/b testing): posthog-3000 fixes

[jurajmajerik]

Changes

Fixes UI issues as pointed out in: https://posthoghelp.zendesk.com/agent/tickets/8463

• The "copy flag key" feature disappeared after the 3000 changes to the header. Adding it below the header now (https://posthog.slack.com/archives/C04L2CV12V9/p1703074477863889)

• Rename the in-app support category from Experiment to A/B Testing

How did you test this code?

👀

[neilkakkar]

🚀

[posthog-bot]

📸 UI snapshots have been updated

2 snapshot changes in total. 0 added, 2 modified, 0 deleted:

• chromium: 0 added, 2 modified, 0 deleted (diff for shard 2)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[github-actions]

Size Change: 0 B

Total Size: 2 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	2 MB

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