DEV: Specify bookmarks order

It's better to order by id than to have a semi-random order. Fixes a flaky test:

```
 1) TopicView with a few sample posts #bookmarks gets the first post bookmark reminder at for the user
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     Failure/Error: expect(first[:post_id]).to eq(bookmark1.post_id)
60

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       expected: 1901
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            got: 1902
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       (compared using ==)
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     # ./spec/components/topic_view_spec.rb:420:in `block (4 levels) in <main>'
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     # ./spec/rails_helper.rb:284:in `block (2 levels) in <top (required)>'
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     # ./vendor/bundle/ruby/2.7.0/gems/webmock-3.14.0/lib/webmock/rspec.rb:37:in `block (2 levels) in <top (required)>'
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```

lib/topic_view.rb

@@ -410,7 +410,7 @@ class TopicView
   def bookmarks
     @bookmarks ||= @topic.bookmarks.where(user: @user).joins(:topic).select(
       :id, :post_id, "topics.id AS topic_id", :for_topic, :reminder_at, :name, :auto_delete_preference
-    )
+    ).order(:id)
   end
 
   MAX_PARTICIPANTS = 24