An error occurs when you pass a relation with SQL comments to the `or` method.

```ruby
class Post
  scope :active, -> { where(active: true).annotate("active posts") }
end

Post.where("created_at > ?", Time.current.beginning_of_month)
  .or(Post.active)
```

In order to work without `ArgumentError`, it changes the `or` method to ignore
SQL comments in the argument.

Ref: https://github.com/rails/rails/pull/38145#discussion_r363024376