Add space next to the spinner in Preview payload button

What does this MR do?

Add space next to the spinner in the Preview payload button in the admin settings page

http://127.0.0.1:3000/admin/application_settings/metrics_and_profiling

Screenshots (strongly suggested)

Before	After

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
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Security

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