Using correct jitter value in CSOT tests using withTransaction

Author: nhachicha

driver-sync/src/test/functional/com/mongodb/client/AbstractClientSideOperationsTimeoutProseTest.java

@@ -1123,7 +1123,7 @@ public void setUp() {
 
         // setting jitter to 0 to make test using withTransaction deterministic (i.e retries immediately) otherwise we might get
         // MongoCommandException setup in the failpoint instead of MongoOperationTimeoutException depending on the random jitter value.
-        ExponentialBackoff.setTestJitterSupplier(() -> 1.0);
+        ExponentialBackoff.setTestJitterSupplier(() -> 0);
 
     }