Add conditions for video showcase

[laras126]

Add conditions so this does not cause a fatal error if some data is not available or used.

Doneness Checklist:

Pre-release # (or n/a):

• Updated root CHANGELOG.md with summary of changes under Unpublished section
• Ran the visual regression tests manually (see the README for details)
• npm run prod in this repo outputs expected changes (excepting the issue with re-ordered partials in larva-css algorithms partials - see LRVA-1885)
• If changes to build scripts or the Node.js server, tested changes in pmc-spark via a pre-release
• • If changes to build tools: npm scripts prod, lint, and dev scripts run as expected
• • If changes to Larva server: Static site generates as expected in a theme (avail. on a URL {brand}.stg.larva.pmcdev.io)

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