in Python 2, _aq_dynamic() returns None without try..except but it raises ValueError in Python 3.

(python 2)
> /SR/parts/erp5/product/ZSQLCatalog/Extensions/zsqlbrain.py(31)_aq_dynamic()
 31  ->   def _aq_dynamic(self, name):
 32         """Acquire an attribute from a real object.
 33         """
 34         if name.startswith('__') :
 35           return None
 36         return getattr(self.getObject(), name, None)
((Pdb)) getattr(self.getObject(), name, None)
*** ValueError: Unable to getObject from ZSQLBrain if ZSQL Method does not retrieve the `path` column from catalog table.
((Pdb)) r
--Return--
> /SR/parts/erp5/product/ZSQLCatalog/Extensions/zsqlbrain.py(36)_aq_dynamic()->None # <-- !!!

Jérome: slightly adjusted manually to just use range where it does not
make a significant difference (for example in test)

also str representation of unicode character is different.

Co-authored-by: Carlos Ramos Carreño <carlos.ramos@nexedi.com>
Co-authored-by: Emmeline Vouriot <emmeline.vouriot@nexedi.com>
Co-authored-by: Kazuhiko SHIOZAKI <kazuhiko@nexedi.com>

- HTMLParseError no longer exist, on python3 parse_declaration throws
AttributeError

py2:
  https://github.com/python/cpython/blob/2.7/Lib/markupbase.py#L135-L140
  https://github.com/python/cpython/blob/2.7/Lib/HTMLParser.py#L124
py3:
  https://github.com/python/cpython/blob/3.12/Lib/_markupbase.py#L130-L134

- scrubHTML must pass `html` as unicode on python2 and str on python3,
adjust the check to cover both py2 / py3