Set cached = False in func_to_past_factory because of missing perform…

…ance improvement and failure in test_scan_nested_tuple_output[gtfn.run_gtfn-False]

src/gt4py/next/backend.py

@@ -154,7 +154,12 @@ def __call__(
     ) -> None:
         if not isinstance(program, IT_PRG):
             args, kwargs = signature.convert_to_positional(program, *args, **kwargs)
-        self.jit(program, *args, **kwargs)(*args, **kwargs)
+        try:
+            compiled = program._compiled
+        except:
+            compiled = self.jit(program, *args, **kwargs)
+            object.__setattr__(program, "_compiled", compiled)
+        compiled(*args, **kwargs)
 
     def jit(self, program: INPUT_DATA, *args: Any, **kwargs: Any) -> stages.CompiledProgram:
         if not isinstance(program, IT_PRG):

src/gt4py/next/ffront/func_to_past.py

@@ -64,7 +64,7 @@ def func_to_past(inp: DSL_PRG) -> PRG:
     )
 
 
-def func_to_past_factory(cached: bool = True) -> workflow.Workflow[DSL_PRG, PRG]:
+def func_to_past_factory(cached: bool = False) -> workflow.Workflow[DSL_PRG, PRG]:
     """
     Wrap `func_to_past` in a chainable and optionally cached workflow step.