This feature is described as a bottle/jar opener on a product page for shears that look like yours from the photo:
- Source: Royal Norfolk via DollarTree: "Also, has bottle/jar opener inset on the handle for added convenience."
Looking at other available scissors with this type of feature, the manufacturers describe it in various ways:
- Williams-Sonoma: "Handle has a built-in bottle opener"
- Victorinox: "The Shears feature a cavity designed to crack nuts or to help twist open stubborn jar lids"
- OXO: "Built-in herb stripper removes fresh herbs from tough stems" (this looks different from your picture, but I wonder if it would still work)
Image gallery of all products with description: https://i.stack.imgur.com/UzZVO.jpg
At least according to the KitchenSeer blog the middle part of the shears is for cracking nuts (although it can also be used as a bottle or jar opener).
Comparing to a dedicated nutcracker pictured as below, the similarity is notable.