Optimize order of input checks in OpFromGraph

Author: jessegrabowski

pytensor/compile/builders.py

@@ -401,7 +401,7 @@ def __init__(
             inline.
         """
         ignore_unused_inputs = kwargs.get("on_unused_input", False) == "ignore"
-        if len(inputs) != len(set(inputs)) and not ignore_unused_inputs:
+        if not ignore_unused_inputs and len(inputs) != len(set(inputs)):
             var_counts = {var: inputs.count(var) for var in inputs}
             duplicated_inputs = [var for var, count in var_counts.items() if count > 1]
             raise ValueError(