This is a clone of issue OCPBUGS-2579. The following is the description of the original issue:
—
On disabling the helm and 
import-from-samples actions in customization, Helm Charts and Samples options are still enabled in topology add actions.

Under 

spec:
    customization:
        addPage:
           disabledActions:

Insert snippet of Add page actions. (attached screenshot for reference)

Actual result:

Helm Charts and Samples options are still enabled in topology add actions even after disabling them in customization

Expected result:

Helm Charts and Samples options should be disabled(hidden)