fix: share buttons on edu content pages

[stephiescastle]

Checklist

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Description

Fixes the PageContent component to use EDU share buttons when using the EDU theme.

Instructions to test

Chromatic links coming soon

Tested in the following environments/browsers:

Operating System

• macOS
• iOS
• iPadOS
• Windows

Browser

• Chrome
• Firefox ESR
• Firefox
• Safari
• Edge