CMM-1044: fix top margin when selecting a plan

[adalpari]

Description

This PR is fixing a margin issue when selecting the site plan

Testing instructions

1. Create a new site
2. Follow all the steps until yu reach the "Select a Plan" scren

• [ ] Verify the top laber is not overlapped by the title bar

Before / After

[dangermattic]

	1 Warning
:warning:	PR is not assigned to a milestone.

Generated by :no_entry_sign: Danger

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr22411-f67eb88
	Commit	f67eb883593153078df8f05aaaa51ec273bd2b3c
	Direct Download	jetpack-prototype-build-pr22411-f67eb88.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr22411-f67eb88
	Commit	f67eb883593153078df8f05aaaa51ec273bd2b3c
	Direct Download	wordpress-prototype-build-pr22411-f67eb88.apk

Note: Google Login is not supported on these builds.