Unify NORMALIZED_DATA_COLUMNS for Ci::JobDefinition

Summary

From !202196 (comment 2715276189)

If we introduce another column like interruptible where we extract the value into a column, we would have to update this code. Should we define a SSoT in JobDefinition for columns that are extracted from config?

Something like this:

class Ci::JobDefinition
  NORMALIZED_DATA_COLUMNS = %i[interruptible]

  def self.fabricate(config:, project_id:, partition_id:)
    sanitized_config, checksum = sanitize_and_checksum(config)
    current_time = Time.current

    attributes = {
      project_id: project_id,
      partition_id: partition_id,
      config: sanitized_config,
      checksum: checksum,
      created_at: current_time,
      updated_at: current_time
    }

    NORMALIZED_DATA_COLUMNS.each do |column|
      attributes[column] = sanitized_config.fetch(column) { 
        column_defaults[column.to_s]
      }
    end
 
    new(attributes)
  end
end

::Ci::JobDefinition
  .select(:id, :partition_id, :project_id, :checksum, *Ci::JobDefinition::NORMALIZED_DATA_COLUMNS)