Fix Geo Pages replication for selective sync

Adds a `project_id_in` scope to fix Geo replication for Pages
deployments when selective sync is enabled. Also adds a spec to test
and catch this in future implementations.

Changelog: fixed
EE: true

app/models/pages_deployment.rb

@@ -16,6 +16,7 @@ class PagesDeployment < ApplicationRecord
   scope :migrated_from_legacy_storage, -> { where(file: MIGRATED_FILE_NAME) }
   scope :with_files_stored_locally, -> { where(file_store: ::ObjectStorage::Store::LOCAL) }
   scope :with_files_stored_remotely, -> { where(file_store: ::ObjectStorage::Store::REMOTE) }
+  scope :project_id_in, ->(ids) { where(project_id: ids) }
 
   validates :file, presence: true
   validates :file_store, presence: true, inclusion: { in: ObjectStorage::SUPPORTED_STORES }

ee/spec/support/shared_examples/models/concerns/replicable_model_shared_examples.rb

@@ -37,8 +37,50 @@ RSpec.shared_examples 'a replicable model' do
       stub_current_geo_node(secondary)
     end
 
-    it 'is implemented' do
-      expect(model_record.class.replicables_for_current_secondary(model_record.id)).to be_an(ActiveRecord::Relation)
+    shared_examples 'is implemented and returns a valid relation' do
+      it 'is implemented' do
+        expect(model_record.class.replicables_for_current_secondary(model_record.id)).to be_an(ActiveRecord::Relation)
+      end
+    end
+
+    context 'when syncing object storage is enabled' do
+      before do
+        secondary.update!(sync_object_storage: true)
+      end
+
+      it_behaves_like 'is implemented and returns a valid relation'
+    end
+
+    context 'when syncing object storage is disabled' do
+      before do
+        secondary.update!(sync_object_storage: false)
+      end
+
+      it_behaves_like 'is implemented and returns a valid relation'
+    end
+
+    context 'with selective sync disabled' do
+      before do
+        secondary.update!(selective_sync_type: nil)
+      end
+
+      it_behaves_like 'is implemented and returns a valid relation'
+    end
+
+    context 'with selective sync enabled for namespaces' do
+      before do
+        secondary.update!(selective_sync_type: 'namespaces', namespaces: [build(:group)])
+      end
+
+      it_behaves_like 'is implemented and returns a valid relation'
+    end
+
+    context 'with selective sync enabled for shards' do
+      before do
+        secondary.update!(selective_sync_type: 'shards', selective_sync_shards: ['broken'])
+      end
+
+      it_behaves_like 'is implemented and returns a valid relation'
     end
   end
 end