[autoform] Fix display_fields handling This follows-up on changeset b2ceb483e056 (present in 3.25 as well), in which AutomaticEntityForm.editable_attributes() was turned into a generator. In this method, in case display_fields is not None, we previously returned a list of (rtype, role); this was changed into a yield, but the change was missing a return after the loop in order not to go through the remainder of the function. Add tests for editable_attributes() method.

@echo off
rem = """-*-Python-*- script
rem -------------------- DOS section --------------------
rem You could set PYTHONPATH or TK environment variables here
python -x "%~f0" %*
goto exit
 
"""
# -------------------- Python section --------------------
import sys
from os.path import join, dirname, normpath
sys.path.insert(0, normpath(join(dirname(__file__), '..', '..')))
from cubicweb.cwctl import run
run(sys.argv[1:])

DosExitLabel = """
:exit
rem """