feat: only show sign in/out as relevant

[kopecs]

This uses the new context key for login status. However, since that context key is still frequently stale due how the current login flow works with our LSP extensions, we should hold off on merging this one until I clean that up too.

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[kopecs]

This should be responsive now that we updated the login flow.

[kopecs]

• feat: policy configuration for local config #199
• feat: new policy view with login CTA #186
• feat: only show sign in/out as relevant #187 👈 (View in Graphite)
• develop

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[kopecs]

Merge activity

• Feb 6, 2:40 PM EST: A user started a stack merge that includes this pull request via Graphite.
• Feb 6, 2:41 PM EST: Graphite rebased this pull request as part of a merge.
• Feb 6, 2:42 PM EST: A user merged this pull request with Graphite.
• Feb 6, 2:42 PM EST: Graphite couldn't merge this PR because it failed for an unknown reason.