Ignore 'free trial ending soon' sidebar item

[czukowski]

Pre-flight Checklist

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• [x] I have read the Contributing Guidelines for this project.
• [x] I agree to follow the Code of Conduct that this project adheres to.
• [x] I updated the version package Updating

Description of Change

Prevent 'free trial ending soon' sidebar item to be counted as unread message

[vraravam]

@all-contributors please add @czukowski for code

[allcontributors[bot]]

@vraravam

I've put up a pull request to add @czukowski! :tada: