Fix LabelToken selecting wrong label

What does this MR do and why?

Labels are case-sensitive but the logic in LabelToken does not treat it as such, resulting in it choosing ~Direction when ~direction was actually chosen. This MR fixes that by making the logic to a case-sensitive match.

Changelog: fixed

Resolves: #361073 (closed)

Screenshots or screen recordings

before	after
Screen_Recording_2022-05-17_at_4.27.01_pm	Screen_Recording_2022-05-17_at_4.28.18_pm

How to set up and validate locally

1. Make a Direction and direction label for a project
2. Visit the project issues page
3. Filter the issues with the direction label and confirm it doesn't show the Direction label

MR acceptance checklist

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