Cannot access Datastore and perform SSA under Datastore Clusters

[hstastna]

There is an issue with Datastores and SSA: The selected Datastore is not accessible while performing SSA from the list of Datastores of selected Datastore Cluster.

Steps to reproduce:

1. Compute > Infra > Datastores > Datastore Clusters accordion
2. Click on some Datastore Cluster, check the checkbox of some Datastore in the cluster
3. Configuration > Perform SSA
   => redirects to the list of all Datastore Clusters and flash message is displayed:
   

The selected record is accessible for sure because if you go to the textual summary of the Datastore and perform SSA from there, SSA is successfully initiated:

[hstastna]

I am closing the issue as it was fixed via #6298