Make frontend aware of dependant storage feature flags

We are using `additional_repo_storage_by_namespace_enabled?`
as a guard for dependant feature flags on the backend.
Let us be consistent with this on the frontend.

ee/app/controllers/groups/usage_quotas_controller.rb

@@ -4,7 +4,7 @@ class Groups::UsageQuotasController < Groups::ApplicationController
   before_action :authorize_admin_group!
   before_action :verify_usage_quotas_enabled!
   before_action do
-    push_frontend_feature_flag(:additional_repo_storage_by_namespace, @group)
+    push_additional_repo_storage_by_namespace_feature_flag
   end
 
   layout 'group_settings'
@@ -21,4 +21,9 @@ class Groups::UsageQuotasController < Groups::ApplicationController
     render_404 unless License.feature_available?(:usage_quotas)
     render_404 if @group.has_parent?
   end
+
+  def push_additional_repo_storage_by_namespace_feature_flag
+    additional_repo_storage_by_namespace_flag = :additional_repo_storage_by_namespace
+    gon.push({ features: { additional_repo_storage_by_namespace_flag.to_s.camelize(:lower) => @group.additional_repo_storage_by_namespace_enabled? } }, true)
+  end
 end

ee/app/controllers/profiles/usage_quotas_controller.rb

@@ -2,7 +2,7 @@
 
 class Profiles::UsageQuotasController < Profiles::ApplicationController
   before_action do
-    push_frontend_feature_flag(:additional_repo_storage_by_namespace, @group)
+    push_additional_repo_storage_by_namespace_feature_flag
   end
 
   feature_category :purchase
@@ -11,4 +11,9 @@ class Profiles::UsageQuotasController < Profiles::ApplicationController
     @namespace = current_user.namespace
     @projects = @namespace.projects.with_shared_runners_limit_enabled.page(params[:page])
   end
+
+  def push_additional_repo_storage_by_namespace_feature_flag
+    additional_repo_storage_by_namespace_flag = :additional_repo_storage_by_namespace
+    gon.push({ features: { additional_repo_storage_by_namespace_flag.to_s.camelize(:lower) => current_user.namespace.additional_repo_storage_by_namespace_enabled? } }, true)
+  end
 end

ee/spec/features/groups/usage_quotas_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe 'Groups > Usage Quotas' do
   let(:gitlab_dot_com) { true }
 
   before do
-    stub_feature_flags(additional_repo_storage_by_namespace: true)
+    stub_feature_flags(additional_repo_storage_by_namespace: true, namespace_storage_limit: false)
     allow(Gitlab).to receive(:com?).and_return(gitlab_dot_com)
 
     group.add_owner(user)
@@ -38,6 +38,20 @@ RSpec.describe 'Groups > Usage Quotas' do
     end
   end
 
+  context 'when `additional_repo_storage_by_namespace` is overruled by `namespace_storage_limit`' do
+    before do
+      stub_feature_flags(namespace_storage_limit: true, thing: group)
+    end
+
+    it 'pushes disabled feature flag to the frontend' do
+      visit profile_usage_quotas_path
+
+      expect(page).to have_pushed_frontend_feature_flags(
+        additionalRepoStorageByNamespace: false
+      )
+    end
+  end
+
   shared_examples 'linked in group settings dropdown' do
     it 'is linked within the group settings dropdown' do
       visit edit_group_path(group)

ee/spec/features/profiles/usage_quotas_spec.rb

@@ -12,7 +12,7 @@ RSpec.describe 'Profile > Usage Quota' do
   let_it_be(:other_project) { create(:project, namespace: namespace, shared_runners_enabled: false) }
 
   before do
-    stub_feature_flags(additional_repo_storage_by_namespace: true)
+    stub_feature_flags(additional_repo_storage_by_namespace: true, namespace_storage_limit: false)
     gitlab_sign_in(user)
   end
 
@@ -38,6 +38,20 @@ RSpec.describe 'Profile > Usage Quota' do
     end
   end
 
+  context 'when `additional_repo_storage_by_namespace` is overruled by `namespace_storage_limit`' do
+    before do
+      stub_feature_flags(namespace_storage_limit: true, thing: namespace)
+    end
+
+    it 'pushes disabled feature flag to the frontend' do
+      visit profile_usage_quotas_path
+
+      expect(page).to have_pushed_frontend_feature_flags(
+        additionalRepoStorageByNamespace: false
+      )
+    end
+  end
+
   it 'is linked within the profile page' do
     visit profile_path