F. Baum writes:

This is called a V1 cut and it is done on every sim check on every
crew for every plane flown in the world. The regs require the planes
weight to be limited so the plane can either stop on the remaining
runway if the engine fails before V1 or continue (and climout) if the
engine fails after V1.

The important point is that the aircraft still took off successfully with one
engine set to idle. Therefore it can take off with only two of three engines
providing thrust.