Web: allow cancelling a job also after it failed

For task scheduling this doesn't matter, but for human workflow it can be
useful to differentiate between "failed" (and should be retried) and
"cancelled" (no longer relevant).

web/app/src/stores/jobs.js

@@ -23,7 +23,7 @@ export const useJobs = defineStore('jobs', {
       return this._anyJobWithStatus(["queued", "paused", "failed", "completed", "canceled"])
     },
     canCancel() {
-      return this._anyJobWithStatus(["queued", "active"])
+      return this._anyJobWithStatus(["queued", "active", "failed"])
     },
   },
   actions: {