Add "Show more" link to browse more than 12 invoices

[aerosol]

Changes

We used to limit the amount of show paddle invoices to 12 - not anymore. The limit is removed completely. In case there are more than 12 invoices, we'll display a "Show more" link unfolding the remaining ones.

https://github.com/plausible/analytics/assets/173738/f1c7765e-4536-451b-9046-f731efbe3111

Not sure if there's a good way to unit test this, open to suggestions.

Tests

• [ ] Automated tests have been added
• [x] This PR does not require tests

Changelog

• [ ] Entry has been added to changelog
• [x] This PR does not make a user-facing change

Documentation

• [ ] Docs have been updated
• [x] This change does not need a documentation update

Dark mode

• [x] The UI has been tested both in dark and light mode
• [ ] This PR does not change the UI