Horizontal design issues with the JP connection flow

[irfano]

Describe the bug
On the first screen of the JP connection flow, there is an unnecessary gap at the top that takes up most of the screen.

To Reproduce
Steps to reproduce the behavior:

1. Log in with a site that doesn't have JP.
2. Tap the JP banner at the bottom of the dashboard.

Screenshots

Expected behavior
There should be no gap.

[dangermattic]

🚫 Please add a type label (e.g. type: enhancement) and a feature label (e.g. feature: stats) to this issue.