MM-20820: add a help button to right controls on global header

[aloks98]

Summary

Add a help button for playbooks as feedback button was removed.

I am in doubt if the Keyboard shortcuts button is needed for this scenario?

Ticket Link

Fixes https://github.com/mattermost/mattermost-server/issues/20820

Screenshots

Release Note

NA

[mm-cloud-bot]

@aloks98: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[mattermod]

Hello @aloks98,

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[mattermod]

E2E tests not automatically triggered, because PR has no approval yet. Please ask a developer to review and then try again to attach the QA label.

[trilopin]

@calebroseland will know more about this than me. However, I would have expected this to happen in the playbooks plugin.

The related code seems to be at global header right component.

[mattermod]

This PR has been automatically labelled "stale" because it hasn't had recent activity. A core team member will check in on the status of the PR to help with questions. Thank you for your contribution!

[lieut-data]

Heads up that as part of our efforts to move to a monorepo, we're closing out a number of older pull requests like this one to help streamline the effort.

If you'd like to preserve these changes -- even if you're not the original author! -- feel free to resubmit the pull request against the monorepo once it's ready. You can subscribe to mattermost-server-issue-22420 for status updates on this effort.