I have a new stove (gas range) that comes with a Nema 14-50 plug. This range should only be using electricity for the igniters and clock. The manual requires:

A 120 volt, 60 Hz., AC only, 15-amp fused, electrical circuit is required.

Question 1: It is my understanding a 14-50R should provide 240V at 50A. Please explain why the stove would only call out 120V.

Question 2: Before I run an 8ga drop to a 50A breaker, is there a simpler way to solve this problem using an existing 120V 15A outlet?

Alternatively, the cable may have been swapped from an existing three prong connection. Attached is an image of the internals. Would someone confirm this looks like a swap that I can swap back? https://imgur.com/a/GYjZIg1