fix[dace][next]: Fixed name of pattern nodes (#1871)

In PR#1857 we updated the `MapFusion` because of that the names of the
pattern nodes have been changed. Apparently, in that PR not all
occurrences of the old names have been replaced.

src/gt4py/next/program_processors/runners/dace/transformations/gpu_utils.py

@@ -718,9 +718,9 @@ def apply(self, graph: Union[dace.SDFGState, dace.SDFG], sdfg: dace.SDFG) -> Non
         if not self.do_not_fuse:
             gtx_transformations.MapFusionSerial.apply_to(
                 sdfg=sdfg,
-                map_exit_1=trivial_map_exit,
-                intermediate_access_node=access_node,
-                map_entry_2=second_map_entry,
+                first_map_exit=trivial_map_exit,
+                array=access_node,
+                second_map_entry=second_map_entry,
                 verify=True,
             )