Fix #8400 - Add definitions for js vars SUGAR.measurements and UA whe…

[marin-h]

Description

Fixes #8400

Motivation and Context

See #8400

How To Test This

1. Set show_header option to false in any DetailView.
2. Set subpaneldefs to show a subpanel.
3. Access the view.
4. Check that no js errors are thrown with devtools on the browser.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Final checklist

• My code follows the code style of this project found here.
• My change requires a change to the documentation.
• I have read the How to Contribute guidelines.

[marin-h]

@Dillon-Brown hi! Could you please take a look a this one? Thanks :)

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[marin-h]

Hey @samus-aran I see my sign is still not added to CLA on this one. Is there anything else I can do?