Reading: Fix UI bug with edge case for lowest score in cohort #2800
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Who is this PR for?
K5 reading folks
What problem does this PR fix?
If the student had the lowest score in their cohort, nothing would be shown in the comparison chart.
What does this PR do?
Fixes the bug to not use
x && y
since 0 is falsy but to check it isn't undefined or null.Checklists
Which features or pages does this PR touch?
Does this PR use tests to help verify we can deploy these changes quickly and confidently?