When actionType is undefined, the message says Dispatched NAVIGATE but the data object omits action_type, so the message contradicts the structured data and misattributes the dispatch type.

The new test 'does not create dispatch breadcrumb for app restart' (reactnavigation.test.ts:1800–1826) calls mockNavigation.finishAppStartNavigation(), which only fires the state listener and never the __unsafe_action__ listener. Since the navigation.dispatch breadcrumb is emitted exclusively inside startIdleNavigationSpan (reactnavigation.ts:353) — which is wired to the __unsafe_action__ listener — the breadcrumb code path is never reached in this test. The assertion expect(dispatchCall).toBeUndefined() therefore passes regardless of whether the !isAppRestart guard exists, so the real app-restart suppression path (invoked via getAppRegistryIntegration → onRunApplication → startIdleNavigationSpan(undefined, true)) remains unverified.