ALL-1460: Bump event-bus to 10.26.0 in alert + device domains

Follow-up to ALL-1381 / PR #11643. event-bus 10.26.0 is published (publish-event-bus-package succeeded on merge commit 083a26e6 at 2026-06-04T15:20Z). Bump consuming domains so the deliveryMode field flows natively end-to-end. Scope: 1. domains/alert/package.json: @texturehq/event-bus ^10.20.0 -> ^10.26.0 2. domains/device/package.json: @texturehq/event-bus ^10.25.0 -> ^10.26.0 3. yarn install in each domain to refresh yarn.lock to 10.26.0 4. Remove the temporary type-augmentation in domains/alert/src/services/monitorAlertBridge/index.ts (the `interface MonitorTransitionPayloadWithDelivery` workaround) — deliveryMode is now native on MonitorTransitionPayload. 5. Update domains/alert/src/services/monitorAlertBridge/applyMonitorTransition.test.ts to use the real event-bus type instead of the augmented shape. 6. Tighten domains/device/src/services/monitor/evaluator/evaluator.test.ts — the schema-version-agnostic assertion ["SHADOW", undefined] can become exactly "SHADOW". Branch: wintermute/all-1460-eventbus-1026-bump-consumers Local gates required: - cd domains/alert && yarn jest src/services/monitorAlertBridge - cd domains/device && yarn jest src/services/monitor/evaluator src/services/monitor/publisher - cd domains/alert && yarn tsgo --noEmit (or whatever the domain typecheck command is) - cd domains/device && yarn tsgo --noEmit - Biome / lint clean on touched files Open PR assigned sephcoster, do not merge. This unblocks ALL-1381 slice 03 (dashboard SHADOW controls).