At present with mig 29, and Indian aircrafts carriers - I strongly believe that it will be operating near by andman and Nicobar against both the cases.
China case- mostly will be focus on the choke point for blockage and will be deployed near andman and Nicobar.
Pakistan case - most likely, these carriers will not be deployed in Arabian sea, they will use blockage any support from Malacca strait for Pakistan. India does not need naval aircraft carriers for direct naval fight, destroyer, submarines frigate and other ships will be used in Arabian sea
Might 2nd plan, if indian navy will be able to neutralize PN ships, they will try blockage for supply chain in Arabian sea.
These are hypothesis based scenarios. I don't believe, such high risk naval assets can put in dangerous zone....
The same gets apply to Chinese navy - if they will deploy in such high risk zones, risk will be very High