firmware/sagas: fix progress alerts

These were being replaced (dismissed then new alert) instead of updated.

src/alerts/actions.ts

@@ -11,14 +11,15 @@ import { AlertActions, AlertDomain, AlertProps, AlertSpecific } from '../alerts'
  * @param specific The specific alert for the domain.
  * @param props Any additional properties required by this specific alert.
  * @param key Optional key to use as unique identifier for toast instead `<domain>.<specific>.<props>`.
+ * @param update Optional boolean flag to update existing alert instead of replacing it.
  */
 export const alertsShowAlert = createAction(
     <D extends AlertDomain, S extends AlertSpecific<D>>(
         domain: D,
         specific: S,
         ...args: AlertProps<D, S> extends never
-            ? [props?: never]
-            : [props: AlertProps<D, S>, key?: string]
+            ? [args?: never]
+            : [props: AlertProps<D, S>, key?: string, update?: boolean]
     ) => ({
         type: 'alerts.action.showAlert',
         domain,
@@ -26,6 +27,7 @@ export const alertsShowAlert = createAction(
         // HACK: using varargs to allow props and key to be optional
         props: args.at(0),
         key: args.at(1),
+        update: args.at(2),
     }),
 );
 

src/alerts/sagas.ts

@@ -23,7 +23,7 @@ function* handleShowAlert(action: ReturnType<typeof alertsShowAlert>): Generator
 
     // if a toast with the same parameters is already open, close it so we
     // can open it again without duplicates.
-    if (existing.length > 0) {
+    if (!action.update && existing.length > 0) {
         toaster.dismiss(key);
         yield* delay(500);
     }