Refactor tracking attributes method in sidebars

What does this MR do?

In this MR we refactor the tracking_attributes method when used in the sidebars. Now, with one method we can reuse it in different sidebar definitions. This is interesting in the scope of &5647 (closed), because there we're going to centralize the creation of all sidebars.

Refs &5647 (closed)

Does this MR meet the acceptance criteria?

Conformity

• 📋 Does this MR need a changelog?
  • I have not included a changelog entry because this is a tooling change.
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