Evo 1672 image carousel opening when post is clicked in card view

[KevinTriplett]

Closes #1672

• prevent ImageCarousel from opening when clicking an image attached to a PostCard
• correct a typo: change onKeydown to onKeyDown

Not sure why I hadn't noticed this typo before now, but including it here since it's tangentially involved.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 47.12%. Comparing base (3cab058) to head (1503f6c). Report is 1 commits behind head on dev.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #1675 +/- ## ======================================= Coverage 47.12% 47.12% ======================================= Files 581 581 Lines 13929 13930 +1 Branches 4024 4025 +1 ======================================= + Hits 6564 6565 +1 Misses 7365 7365 ```

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[KevinTriplett]

keep the class name case consistent