User is not shown failures when creating/editing configmap

[richard-cox]

Setup

• Rancher version: 2.9 pre 2.9.0

Describe the bug

• If the request to create or edit a configmap fails the user sees a forever Creating/Saving button and is not informed of the issue
• This seems to only be the case for configmaps. I had a quick look at some others (persistent volume, secrets, pod, storage class) and they were fine

We should check if this was a recent regression or also applies to 2.8

To Reproduce

• Cluster Explorer --> Storage --> ConfigMap --> Create --> Add $^$^"£% as a name --> Create

Result

• user is not informed of failure

Expected Result

• error banner showing description of error. note - there's an existing pattern to convert an error response to an on screen message

Screenshots

[yonasberhe23]

e2e test coverage is sufficient. will move this to done as soon as the below is resolved. cc @izaac

I'm seeing this bug in 2.8, should we backport this? cc @momesgin @richard-cox

[richard-cox]

In hindsight, just 2.9.0 will suffice