Live-migration supports generated columns on source (#3460)

Signed-off-by: Arunprasad Rajkumar <ar.arunprasad@gmail.com>

migrate/troubleshooting.md

@@ -14,9 +14,6 @@ import OpenSupportRequest from "versionContent/_partials/_migrate_open_support_r
 
 Live migration tooling is currently experimental. You may run into the following shortcomings:
 
-- You may experience failure to migrate your database due to incompatibilities
-  between the source and target (e.g. tables with generated columns cannot be
-  replicated).
 - Live migration does not yet support mutable compression (`INSERT`, `UPDATE`,
   `DELETE` on compressed data).
 - By default, numeric fields containing `NaN`/`+Inf`/`-Inf` values are not