Use set_lm in ReAnchor bound-client test

Amp-Thread-ID: https://ampcode.com/threads/T-01a0bf8d-a1dd-7603-906c-ea06c46ff7f7
Co-authored-by: Isaac Miller <isaac@cmpnd.ai>

Author: ampagent

tests/teleprompt/reanchor/test_reanchor.py

@@ -116,7 +116,8 @@ def items_metric(gold, pred, trace=None):
 def test_the_program_keeps_a_bound_client_and_callbacks(system_one):
     client = system_one(leaning)
     dspy.configure(lm=None)
-    student = dspy.Predict(Sig, lm=client, callbacks=[])
+    student = dspy.Predict(Sig, callbacks=[])
+    student.set_lm(client)
     program = ReAnchor(metric, num_threads=2).compile(student, trainset=examples())
     assert program.lm is not None and program(pair="same").match is True