I struggle to see how electric cars made in India will be competitive against Chinese cars, considering that most of the EV supply chain is in China and therefore has the best tech and/or the lowest cost. Plus there are already low-cost Chinese cars being exported, along with higher-end cars.
CATL has also announced mass-production of sodium batteries, so I don't see any particular advantage for an Indian company.
Plus the majority of Tesla cars now being delivered have LFP batteries which are not vulnerable to thermal runaway.
If anything, Tesla will be able to leverage the strength of its China operations to outcompete any Indian company in the global automotive industry.