Description of problem:

When the Internal Devfile Registry is disabled by:

$ oc edit checlusters.org.eclipse.che devspaces -n openshift-devspaces

apiVersion: org.eclipse.che/v2
kind: CheCluster
metadata:
  name: devspaces
  namespace: openshift-devspaces
  ...
spec:
  components:
    ...
    devfileRegistry:
      disableInternalRegistry: true
  ...

then the IDE Dashboard shows a popup error message that must always be confirmed: 

Failed to fetch devfiles metadata from registry URL: https://che-devfile-registry.prod-preview.openshift.io/, reason: Error: Network Error

Steps to Reproduce

1. Edit the CheCluster/devspaces and set disableInternalRegistry: true
2. Try to open the DevSpaces Dashboard and create a workspace from a repository.
3. The error message is always visible and must be confirmed.

Additional info: When the Internal Registry is disabled, the error message should not be printed and if any similar message is printed/visible, it is essential to click the cross button (top right), it would be nice to remove any additional error message by clicking on it anywhere in the bubble..

Actual results:

An error message is displayed and must be confirmed by a click.

Expected results:
No error message is displayed when Internal Registry is disabled.

Additional info:

**

Documentation:

Red Hat OpenShift Dev Spaces, Administration Guide -> 3. Configuring OpenShift Dev Spaces -> 3.1.3. CheCluster Custom Resource fields reference -> Table 3.6. Configuration settings related to the Devfile registry component used by the OpenShift Dev Spaces installation