fix(tui): clear onboarding after provider connect (#34819)

Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

packages/tui/test/util/connected-provider.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, test } from "bun:test"
+import { hasConnectedProvider } from "../../src/util/connected-provider"
+
+describe("hasConnectedProvider", () => {
+  test("is false without integration credentials", () => {
+    expect(hasConnectedProvider([])).toBe(false)
+    expect(hasConnectedProvider([{ connections: [] }])).toBe(false)
+  })
+
+  test("is true after any provider integration is connected", () => {
+    expect(hasConnectedProvider([{ connections: [{ type: "credential", id: "cred_1", label: "Work" }] }])).toBe(true)
+    expect(hasConnectedProvider([{ connections: [{ type: "env", name: "OPENAI_API_KEY" }] }])).toBe(true)
+  })
+})