recovery: move lsn comparison after the replica_id assertion

It doesn't make sense to assert that replica_id is correct in a row
after using that replica id to make some decisions based on it. Let's
switch the order of operations: first assert that replica_id is correct,
then compare row lsn with the already recovered one.

In-scope-of #9491

NO_DOC=refactoring
NO_TEST=refactoring
NO_CHANGELOG=refactoring

(cherry picked from commit 4ec51b4b)