Fix Cluster index view @scope logic

app/views/projects/clusters/index.html.haml

@@ -2,13 +2,7 @@
 - page_title "Clusters"
 
 .clusters-container
-  - if @clusters.empty? && (@scope.nil? || @scope == 'all')
-    = render "empty_state"
-  - elsif @clusters.empty? && (!@scope.nil? || @scope != 'all')
-    = render "tabs"
-    .prepend-top-20.text-center
-      = s_("ClusterIntegration|There are no clusters to show")
-  - else
+  - if !@clusters.empty?
     = render "tabs"
     .ci-table.js-clusters-list
       .gl-responsive-table-row.table-row-header{ role: "row" }
@@ -22,3 +16,9 @@
       - @clusters.each do |cluster|
         = render "cluster", cluster: cluster
     = paginate @clusters, theme: "gitlab"
+  - elsif @scope == :all
+    = render "empty_state"
+  - else
+    = render "tabs"
+    .prepend-top-20.text-center
+      = s_("ClusterIntegration|There are no clusters to show")