Add ‘paste panel YAML into dashboard’ columns with buttons and message to panel preview page

What does this MR do?

Please enable FF: metrics_dashboard_new_panel_page. More at: &2882

Part of #228761 (closed).

As a UI refinement of the panel preview, and to follow the UI design more closely, one more column of information is added along with buttons and links. The column's heading is ‘paste panel YAML into dashboard’.

Example URL: http://127.0.0.1:3000/root/autodevops-deploy/-/metrics/panel/new

Screenshots

Before	After

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

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
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

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• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
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