fix: listing metadata for EDU News and External Links

[stephiescastle]

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Description

Addresses feedback:

• https://github.com/nasa-jpl/www/issues/191#issuecomment-2322505407

Changes:

• Adds an external link icon next to the label for all External Link BlockLinkCards (including www)
• Adds both the news "pill" and topic label for EDU News items

Instructions to test

Check Chromatic:

• External Link Card: https://668c47cbeb95392cd79c3c0d-ybyaghbiaa.chromatic.com/?path=/story/components-cards-blocklinkcard--external-link (you can switch between EDU and WWW themes in the top toolbar)
• EDU News Card: https://668c47cbeb95392cd79c3c0d-ybyaghbiaa.chromatic.com/?path=/story/components-cards-blocklinkcard--edu-news-item&globals=theme:ThemeEdu

Or test locally:

1. make vue-storybook
2. Check the following stories, and try changing the "size" attribute in controls

• External link card: http://localhost:6006/?path=/story/components-cards-blocklinkcard--external-link&args=size:lg&globals=theme:ThemeEdu
• EDU News card: http://localhost:6006/?path=/story/components-cards-blocklinkcard--edu-news-item&globals=theme:ThemeEdu

Tested in the following environments/browsers:

Operating System

• macOS
• iOS
• iPadOS
• Windows

Browser

• Chrome
• Firefox ESR
• Firefox
• Safari
• Edge