[TYPO3-commerce] fe_user is updated in pi4 at "edit" even if is_main_address is not set

[Benny Schimmer]

Hi list,

if we edit an delivery address during checkout process (not create!!), 
the original fe_user data is updated even the is_main_address flag is 
not set.

Is this a bug, or did we miss any options? This happens, because in the 
pi4 line ~972 the hook-method "afterAddressEdit" is called, which 
notifys the dao field mapper (observer).

Thank you in advance, cheers

Benny