[HOLD for payment 2024-07-10] [LOW] [Performance] Improve the TTI for native apps

[mountiny]

Coming from here

Problem

The TTI time for Android app using the heavy account is 60s. For iOS App its 16s. This would deter any user from using the App as they would not wait that long for it to start being usable

Solution

Investigate how we can speed up the start up time for native devices

Issue Owner

Current Issue Owner: @JmillsExpensify