Revert "Wrap reparent in a try-catch."

This reverts commit 09782e97.

Reason for revert: part of a revert chain to CP fix to b/404507270. The end state is the same as currently at ToT, but need to have cherry-pickable CLs for branches that are in CP mode.

Change-Id: I4dda41ef22422e9ef502a71ee554125d02c987f0