Add icons to existing build condition dots
Add icons to existing build condition dots

Summary:
Partial fix for T85043

- modifies existing build condition dots to include fa icons for easier, color independent readability
- Does not remove 'E' (for errors) or numbers indicating how many tests failed

Test Plan:
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Reviewers: kylec

Reviewed By: kylec

Subscribers: changesbot

Projects: #changes_ui

Differential Revision: https://tails.corp.dropbox.com/D193818

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