feat(web-analytics): Tidy up copy on session explorer

[robbie-c]

Problem

Looks like a user was confused here https://posthoghelp.zendesk.com/agent/tickets/19008. Also there was a grammatical error which is now fixed.

Changes

Fix the grammar, remove the confusing line, add a link to the feature reqeuest

Does this work well for both Cloud and self-hosted?

Yes

How did you test this code?

[github-actions[bot]]

Size Change: 0 B

Total Size: 1.14 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	1.14 MB

_{compressed-size-action}

[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 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[posthog-bot]

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