Notebook (alerts): usability challanges.

When using notebooks, I want to be able to create Alerts which are functional and meaningful. Here is a (non-exhaustive) list of currently known challenges.

## Usability checks
- [ ] OVERALL GOAL:
* If I generate an alert, and export it to a task --> I want that task to be valid (when running from the Tasks page), and to run according to my inputs set in notebooks.
* this requires multiple upstream parts (listed below) to be correct.
- [ ] Dataset usage:
* If I build a dataset using the query builder, and then create an alert based on the resultant dataset --> this Alert should be valid (in terms of the dataset).
* example bug: https://github.com/influxdata/ui/issues/4080
- [ ] Endpoint usage:
* If I generate an alert using a given endpoint --> I want to know that this Alert is properly triggering the endpoint.
* example bug: https://github.com/influxdata/ui/issues/3880
- [x] Time window:
* If I generate an alert, using a certain time range (lookback window), I want to know that it will work as intended (across this time window).
* Caveat: thus far, we have not seen this issues with how notebooks does alerts. But if we move closer to the conceptual model of the Alerts section of the app --> we'll run into that problem.
* example bug (in non-notebooks alerts): https://github.com/influxdata/ui/issues/3803
* example bug (in non-notebooks alerts): https://github.com/influxdata/ui/issues/3781
- [ ] Suggestions in UI form inputs.
* I want useful suggestions to know how to fill in the UI form elements.
* example bug: https://github.com/influxdata/ui/issues/3946
* example bug: https://github.com/influxdata/ui/issues/3931
- [ ] UI form inputs are being consumed.
* If I enter information into a UI form, I want to know this information is correctly inserted into the output flux query.
* example bug: https://github.com/influxdata/ui/issues/3919
- [ ] UI form inputs are being validated:
* If I enter bad/wrong information into a UI form, I want to be told about it (and not allowed to export the invalid alert query).
* example bug: https://github.com/influxdata/ui/issues/4022
- [ ] Per each alerting event --> get 1 alert notification.
* If I ask for an alert to occur under a given condition (per time window), then I should get only 1 alert notification (per time window).
* https://github.com/influxdata/ui/issues/4034
* https://github.com/influxdata/ui/issues/3707
- [ ] Trusting in the auto-generated flux.
* Even if we have all of the above steps, can I trust that the flux alert query built for me (and exported) is valid?
* many examples:
* https://github.com/influxdata/ui/issues/3706
* https://github.com/influxdata/ui/issues/3742
* https://github.com/influxdata/ui/issues/3764
* https://github.com/influxdata/ui/issues/3788
* https://github.com/influxdata/ui/issues/3830
* https://github.com/influxdata/ui/issues/3846
* https://github.com/influxdata/ui/issues/3847
* https://github.com/influxdata/ui/issues/3945
* https://github.com/influxdata/ui/issues/4021
- [ ] Examining my alert tasks.
* After I export my alert to tasks, I want to be able to view this tasks. (+ run and edit them.)
* example bug: https://github.com/influxdata/ui/issues/3780
- [ ] Examining my alert notifications. (a.k.a. notification events.)
* After I created my alert task, it should run --> triggering many notifications. I want to be able to examine these notifications.
* I also do not want to get confused between what notifications occur from which parts of the app (e.g. the Alerts section non-notebooks alerts, and the notebook alerts).
* example bug: https://github.com/influxdata/ui/issues/3710
* https://github.com/influxdata/ui/issues/3708
- [x] Understanding notebook alerts, in the context of the larger Alert system.
* When I create an Alert Check (outside of notebooks), the alert check will write a "status" to my `_monitoring` bucket.
* When I create an Alert Notification Rule (outside of notebooks), the alert notification will read my `_monitoring` bucket and trigger a new notification.
* BUT: in the current implementation, any notebook alert created will also write a a "status" to my `_monitoring` bucket.
* Will this also trigger my Alert Notification Rules?
* How about other instances of cross-talk (cross-view)?
* example bug: https://github.com/influxdata/ui/issues/4081