[Oracle] Migration of COMPOUND TRIGGERS is not supported

[shubham-yb]

Jira Link: DB-13448
Compound triggers in Oracle allow you to encapsulate related trigger logic within a single trigger, handling multiple timing points. This can simplify your code and improve performance, especially when multiple triggers on the same table might otherwise interfere with each other.
PG / YB does not have a direct equivalent to Oracle's compound triggers and migrating/converting those to supported / equivalent syntax is not supported yet.