Fix _look_for_prod_band_file with None window

Author: remi-braun

eosets/utils.py

@@ -104,8 +104,9 @@ def _look_for_prod_band_file(
         with contextlib.suppress(StopIteration):
             # Check if the band exists in a non-writable directory
             band_regex = f"*{prod.condensed_name}*_{band_name}_*"
-            if "window" in kwargs:
-                band_regex += f"{get_window_suffix(kwargs.get('window'))}*"
+            window = get_window_suffix(kwargs.get("window"))
+            if window is not None:
+                band_regex += f"{window}*"
             LOGGER.debug(
                 f"Looking for {band_regex} in {prod._get_band_folder(writable=writable)}"
             )