I know people who not only took the bulbs but the sockets off the wall too. It’s amazing what some people might do. My mother nearly pulled out of a house purchase over a set of drawers. They had been hand made to fit a dressing room in a type of attic space.
Fitted stoves sound like fixtures and fittings to me. Speak to the estate agent and your solicitor.
The day we were due to close, we viewed the house and a number of light fittings had been removed. They were chandeliers and other large fittings, so had some value.
We delayed closing and asked for the fittings to be returned or for compensation.. Vendor refused.
After a couple of days we proceeded to close, because we didn't want to risk derailing the transaction over the light fittings.. Sometimes you just have to swallow it and move on, the OP might need to do the same..