MNTOR-1809 Returning user dashboard chart

[codemist]

References:

Jira: MNTOR-1809
Figma: https://www.figma.com/file/CaEKIhvSJqf6KNIMzSkt40/Concepts-for-Monitor-MVP-Redesign?type=design&node-id=1403-83261&mode=design&t=0FZmqDqjHHlIwrgx-4

This adds the dashboard banner state for returning users who haven't run a scan.

Screenshot (if applicable)

Checklist (Definition of Done)

• Localization strings (if needed) have been added.
• Commits in this PR are minimal and have descriptive commit messages.
• I've added or updated the relevant sections in readme and/or code comments
• I've added a unit test to test for potential regressions of this bug.
• Product Owner accepted the User Story (demo of functionality completed) or waived the privilege.
• All acceptance criteria are met.
• Jira ticket has been updated (if needed) to match changes made during the development process.
• Jira ticket has been updated (if needed) with suggestions for QA when this PR is deployed to stage.

[pdehaan]

nit: this screenshot (from above) is a bit weird because we're showing Email addresses 0×.
Shouldn't we be filtering out labels that aren't in the donut?
I'd have to look at the code again, but if we have no email addresses but 3 in "other" was there nothing else we could have shown in the donut chart? Or is this just the curse of mock data?

[codemist]

@pdehaan Fixed in #3260

[mansaj]

Dont worry about the build failures, I'll deal with it on the base branch

[mansaj]

Thanks!