The schedule of cost components is not a list of rates or prices. It just sets out what the contractor will be paid for and how that is calculated. And nearly all the items in the schedule of cost components are paid for at what they have actually cost the contractor. So, those costs will, by the very nature, include for any inflation that has occurred to those costs.
The only exceptions to this are item 24 and sections 5 and 6 of the schedule of cost components, which are based on quoted rates. These usually form only a very small part of the contractor’s cost and they know that these will not be increased for inflation and can make their allowances accordingly in the rates they quote.