By supplying Brahmos to the PH, as well as supporting Bong Bong Marcos and the Amboys against China, India had inserted itself into China's SCS disputes. A couple of unreliable Brahmos missiles is nothing China that could not handle, but the threat and intent is there.
What Modi and Jaishankar severely underestimates is that China can do so much more in South Asia to hit back. Pakistan is a far more dangerous foe to India than the PH could ever be to China. Other smaller nations around India are slowly opening to cooperating with China in defense. Unlike China, practically all of India's neighbours have territorial disputes with it. They are either current or potential customers for Chinese weapons. Apart from that, Myanmar's loss of its Northern territories actually makes fertile ground to train and arm insurgents for India's Northeastern states. Even better that there are plenty of modern Russian and NATO weaponry on the black market today to arm them with. These idiots are lucky that China is no longer into the dark arts of supporting insurgencies in other countries. But if they keep pushing, they might eventually compel China to reopen its book of the dark arts.
Modi will win the current election in India, and because of that, the chances of another Indian war with China is getting more likely. Should that day come, China should unleash hell on India on multiple fronts. First, a good old fashioned spanking by the PLA at Aksai Chin and South Tibet. Second, support a Pakistani invasion to liberate Indian-Occupied Kashmir. Third, create and support multiple uprisings in North Eastern India. They would help to weaken India's grip on South Tibet and Bhutan. When the PLA have secured South Tibet, they can help to liberate Sikkim too. Fourth, fight the Indian Navy in and around the Indian Ocean to break their blockade of the Malacca Strait. Aim to sink the Indian Navy for good. Don't forget to prepare ABM systems near the Indian border and in the Indian Ocean, just in case India might launch its Agni's and other nuclear-tipped ballistic missiles.