Will flashing stock firmware also restore the stock recovery?
Flashing: Not the rude one, the android one!

honestly, You should flash the 198,to ensue you get the right files. You might need to unlock the bootloader again, but I doubt it. 

Also, to answer the title: Yes, Flashing the Stock OS will Flash stock recovery. Unlike custom ROMS, Stock ROMS Re-flash the RADIO (Also known as /efs in Samsung, is responsible for mobile data, calls, WiFi, etc.) The system, the recovery, kernel, boot image.... And more!