I suggest that you sell the charging cable separately. It is our third MX Master 3S mouse in this household and we definitely don’t need that many charging cables. No good for the environment, and also would enable you to market the mouse at a lower price point and “boast” that you implemented that change out of “environmental concerns”. Win-win situation for everyone…
I would also have the cable have USB-C at both ends, or… offer an option to choose which cable we would like to purchase (USB to USB-C or USB-C to USB-C), if/when you offer them as a separate buy.

(It is like buying all at once 5 electric tooth brushes for one household – real life experience. You end up with 5 separate chargers, most of which you will never use. And in a few years when the time comes to replace your tooth brush you are forced to buy more same style chargers, as part of the package.
No offence meant, but sometimes I wonder why “people at the top” responsible for “noticing” these things - don’t… )