Current page is not visually indicated when users are using High Contrast Mode

Description

This issue was identified by Microsoft during an internal audit for accessibility.

Currently, when a Windows user has enabled High Contrast mode, there is no visual indicator that a particular item in the course nav is the page they are currently on.

In the image above, I would expect to be able to tell that I am on the Notes page in the nav.

Elsewhere in the platform, we bold the text in links and buttons for the current page. I suggest the same fix here. I'm pretty sure you can fix it in this class definition here:
https://github.com/edx/edx-platform/blob/master/lms/static/sass/course/layout/_courseware_header.scss#L59

Steps to Reproduce

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Current Behavior

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Expected Behavior

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Reason for Variance

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Release Notes

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User Impact Summary

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Status

Assignee

Michael Terry

Reporter

Mark Sadecki

Reach

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Impact

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Groups with Read-Only Access

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Actual Points

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Category of Work

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Platform Map Area (Levels 1 & 2)

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Platform Map Area (Levels 3 & 4)

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Priority

CAT-3
Configure