Kristin Fix Calendar Selected Date Dark Mode Style in Community Portal Page

[KH07]

Description

Fix the styling for the selected date so it matches dark mode and text stays readable.

Related PRS (if any):

None

Main changes explained:

• Update CommunityCalendar.module.css to add dark mode styling override and remove duplicated selectors

How to test:

1. check into current branch
2. do npm install and ... to run this PR locally
3. Clear site data/cache
4. log as admin user
5. go to communityportal/calendar
6. verify selected-date box matches dark mode styling

Screenshots or videos of changes:

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[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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