feat(seer): add global AskSeerButton component

[natemoo-re]

Refactors global nav's "Ask Seer" button into a stateful component, colocated with the rest of the Seer code

seer-button-state.mov

[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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[aliu39]

nice!

[sentry]

Bug: A race condition exists where openDrawer is called with a stale runId from a closure before the setRunId state update completes, causing the drawer to load with incorrect data.
_{Severity: HIGH}

Suggested Fix

The openDrawer call should be updated to pass the new openRunId directly to the ExplorerDrawerContent component instead of relying on the stale runId from the closure. This ensures the drawer is always rendered with the correct, most up-to-date runId. Specifically, change runId={runId} to runId={openRunId} inside the openDrawer callback.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location:
static/app/views/seerExplorer/components/drawer/useSeerExplorerDrawer.tsx#L82-L90

Potential issue: When `openSeerExplorerDrawer` is called with a new `runId`, it
schedules an asynchronous state update via `setRunId` but immediately calls
`openDrawer`. The renderer function passed to `openDrawer` is a closure that captures
the `runId` from the current render, which is stale. The `GlobalDrawer` then renders the
`ExplorerDrawerContent` with this stale `runId` prop. Even after the parent component
re-renders with the correct `runId`, the drawer content is not updated because the
renderer function is not re-executed, leading to the drawer displaying the wrong session
or no session at all.

[ivy-sentry]

I would expect it not to remain pressed while closed and thinking. Otherwise looks great!