update flux calibration code

csst/msc/calib_flux.py

@@ -14,7 +14,8 @@ from astropy.wcs.utils import proj_plane_pixel_scales
 
 from .. import PACKAGE_PATH
 from ..core.processor import CsstProcessor
-from naming import CsstMscNamingRules as nr
+#from naming import CsstMscNamingRules as nr
+from csst.msc.data_manager import CsstMscDataManager
 
 # Edited on Jun. 17, 2022
 # add color term