Merge bitcoin/bitcoin#22187: test: Add sync_blocks in wallet_orphanedreward.py

7a681d6 Add sync_blocks in wallet_orphanedreward.py. (Daniel Kraft)

Pull request description:

  Add an explicit `sync_blocks` call in `wallet_orphanedreward.py`, which was missing and could lead to intermittent failures of the test due to race conditions.

  This will presumably fix #22181.

ACKs for top commit:
  MarcoFalke:
    review ACK 7a681d6

Tree-SHA512: bb226c31bf3f2e7c52beb829d7b67496e5b38781245db5f9184e3f28c93ac3aa4d21fcf5bf3055e79d384cfd0ed916e79dccb3d77486e86fe1fedb5e35f894ad

Author: MarcoFalke

test/functional/wallet_orphanedreward.py

@@ -31,6 +31,7 @@ def run_test(self):
         # Let the block reward mature and send coins including both
         # the existing balance and the block reward.
         self.nodes[0].generate(150)
+        self.sync_blocks()
         assert_equal(self.nodes[1].getbalance(), 10 + 25)
         txid = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 30)