Create unit tests for resource list and involved components

[cnotv]

Description

Create unit tests involving the resource lists, ensuring the rendering regardless of its type.

Context

As outcome of #6613, it resulted convenient to list tests based on component features and related view. The last one may be limited in resulting fetching data on page loaded.

Components

• Add unit tests for Namespace filtering in resources #7391
• Add data driven unit test for NamespaceFilter component #7500
• Tables
  • Add unit tests for ResourceTable #7474
  • SortTable
  • MastHead
  • tbd

In case of the tables, it should be identified which functionality comes from which component.
This includes:

• Filtering based on a given schema and user preferences using the getter['pref/get']('locale')
• Sorting columns
• Generating columns
• Grouping rows
• Generate action lists