[FIX] web: list multi edit: prevent force save

Have a list with multi_edit enabled
Have a widget boolean_toggle displayed on some field
Select some records to be in multi edit mode

Before this commit, the record on which the boolean toggle button was clicked was written
and then the multi edit feature was triggered and wrote on all the records
The first write is unnecessary and counter intuitive

After this commit, only the write with all the multi edited records is done