fix: copy on online success page

[theClarkSell]

Online success page copy updated cart loaded on page.svelte rather than layout.svelte so it load everytime.

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Name	Status	Preview	Comments	Updated (UTC)
thatconference-com	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 2, 2024 5:59pm

[theClarkSell]

Current dependencies on/for this PR:

• main
  • PR #196 👈

This stack of pull requests is managed by Graphite.