Test: GB mobile button width settings PR

[enejb]

Do not merge.

This PR is created to test the Button blocks new width settings.

To test:

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

You can test the changes on this Pull Request by downloading it from AppCenter here with build number: 43002. IPA is available here. If you need access to this, you can ask a maintainer to add you.

[peril-wordpress-mobile]

	Warnings
⚠️	This PR is tagged with 'DO NOT MERGE'.
⚠️	PR is not assigned to a milestone.

Generated by 🚫 dangerJS

[peril-wordpress-mobile]

You can trigger optional UI/connected tests for these changes by visiting CircleCI here.