Ignore pages permissions in template finder

We don't export anything related to GitLab Pages,
so we shouldn't care about these permissions.

app/models/project_feature.rb

@@ -20,7 +20,7 @@ class ProjectFeature < ApplicationRecord
     container_registry
   ].freeze
 
-  EXPORTABLE_FEATURES = (FEATURES - [:security_and_compliance]).freeze
+  EXPORTABLE_FEATURES = (FEATURES - [:security_and_compliance, :pages]).freeze
 
   set_available_features(FEATURES)
 

doc/user/admin_area/custom_project_templates.md

@@ -16,7 +16,7 @@ Every project directly under the group namespace will be
 available to the user if they have access to them. For example:
 
 - Public projects, in the group will be available to every signed-in user, if all enabled [project features](../project/settings/index.md#sharing-and-permissions)
-  are set to **Everyone With Access**.
+  except for GitLab Pages are set to **Everyone With Access**.
 - Private projects will be available only if the user is a member of the project.
 
 Repository and database information that are copied over to each new project are

doc/user/group/custom_project_templates.md

@@ -62,7 +62,7 @@ GitLab administrators can
 
 Within this section, you can configure the group where all the custom project
 templates are sourced. Every project _template_ directly under the group namespace is
-available to every signed-in user, if all enabled [project features](../project/settings/index.md#sharing-and-permissions) are set to **Everyone With Access**.
+available to every signed-in user, if all enabled [project features](../project/settings/index.md#sharing-and-permissions) except for GitLab Pages are set to **Everyone With Access**.
 
 However, private projects will be available only if the user is a member of the project.
 

ee/spec/finders/custom_project_templates_finder_spec.rb

@@ -26,6 +26,12 @@ RSpec.describe CustomProjectTemplatesFinder do
       expect(subject.execute).to be_empty
     end
 
+    it 'ignores pages permissions as they are not exported' do
+      project = create(:project, :internal, :metrics_dashboard_enabled, namespace: group, pages_access_level: ProjectFeature::PRIVATE)
+
+      expect(subject.execute).to eq([project])
+    end
+
     context 'when the group has projects' do
       using RSpec::Parameterized::TableSyntax
 
@@ -34,12 +40,12 @@ RSpec.describe CustomProjectTemplatesFinder do
       let_it_be_with_reload(:public_project) { create :project, :metrics_dashboard_enabled, :public, namespace: group, name: 'public' }
 
       where(:issues_access_level, :minimal_user_access, :available_templates) do
-        :disabled | :no_access | %w[public]
+        :disabled | :no_access | %w[public internal]
         :disabled | :guest     | %w[public internal private]
         :private  | :guest     | %w[public internal private]
         :private  | :no_access | %w[]
         :enabled  | :guest     | %w[public internal private]
-        :enabled  | :no_access | %w[public]
+        :enabled  | :no_access | %w[public internal]
       end
 
       with_them do