Kaveri is an engine with a bad poor thrust-to-weight ratio; even the Tejas 1 abandoned its adaptation.
Removing the afterburner to make it a drone engine is essentially recycling waste, but whether India can currently design and produce such a model remains questionable.
Developing high-bypass turbofan engines is far more difficult than developing low- or medium-bypass turbofan engines. Given that the Kaveri itself is still a long way off, developing a bomber engine from it is pure fantasy.
But from an Indian perspective, I still believe they should persist in completing the Kaveri.
The key is execution, cultivating an ecosystem. This requires procuring the necessary tools, training the necessary engineers, and establishing the appropriate organizations. A poor first version is acceptable. WS-10 started poorly, but you can revise it to a second or third version, introducing new designs and materials. The most important thing is maintaining the operating ecosystem.
But they won't.