Add online status to the profile popover

[mattermod]

Community thread: https://community-daily.mattermost.com/core/pl/x6abatdqrfytxqrdxz8o5818jh

Proposal is to add an online status indicator to the user profile popover after the users name.

Note this is already done for mobile

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JIRA: https://mattermost.atlassian.net/browse/MM-30285

[esethna]

@andrewbrown00 can you please link the figma file?

[edvinnn]

I'd like to implement this sweet little feature

[esethna]

Addressed in https://github.com/mattermost/mattermost-webapp/pull/7246