Even in mainland China, where iOS does have a large amount of changes to comply with local regulations, Apple does not pre-install any apps from anyone.
India chose to back off on data sovereignty [0] because it would have had a side effect of making Indian IT Offshoring less competitive plus to help make negotiating a US-India BTA easier [1].
[0] - https://verfassungsblog.de/cross-border-data-flows-and-india...
[1] - https://www.bloomberg.com/news/articles/2025-04-25/us-seeks-...
So does a security backdoor in every mobile device used by said Indian offshoring staff.
That's because China has no regulation obliging them to do so.
China takes the other, more comprehensive, route to privacy invasion. Sucking up every bit of data at the router.