Merge bitcoin/bitcoin#23331: test: Replace log with assert_equal in wallet_abandonconflict

fa6c62f test: Replace log with assert_equal in wallet_abandonconflict (MarcoFalke)

Pull request description:

  This will make the test fail as soon as the bug is fixed, forcing it to
  be updated. Otherwise, the bug might be fixed (or made worse)
  accidentally, leaving the test in an inconsistent state.

ACKs for top commit:
  theStack:
    Concept and code-review ACK fa6c62f
  brunoerg:
    tACK fa6c62f

Tree-SHA512: 416f72380164bf3f93332a5cfa81a8e61d8ada3714ef6815889ed3cf2d16c09411760dee4acf19629227e565b765b3dea491a0b23efd38eb370254cfadf7c441

Author: MarcoFalke

test/functional/wallet_abandonconflict.py

@@ -213,7 +213,7 @@ def run_test(self):
         #assert_equal(newbalance, balance - Decimal("10"))
         self.log.info("If balance has not declined after invalidateblock then out of mempool wallet tx which is no longer")
         self.log.info("conflicted has not resumed causing its inputs to be seen as spent.  See Issue #7315")
-        self.log.info(str(balance) + " -> " + str(newbalance) + " ?")
+        assert_equal(balance, newbalance)
 
 
 if __name__ == '__main__':