[FIX] tools: safe_eval._UNSAFE_ATTRIBUTES as a list

`_UNSAFE_ATTRIBUTES` was changed from a `list` to a `set` in odoo/odoo#151989.
odoo/odoo@cde2781591

Reset it to a `list` as before, by retro-compatibility concerns,
in case developers used features not working on `set`.
For instance:
- `_UNSAFE_ATTRIBUTES.append`
- `_UNSAFE_ATTRIBUTES.extend`
- `_UNSAFE_ATTRIBUTES + ['foo']`

The opportunity is taken to add `_co_code_adaptive`,
which is a new attribute added from Python 3.11,
hence available from Ubuntu Noble.
Firstly added as `_co_quickened` in
https://github.com/python/cpython/commit/001eb520b5757294dc455c900d94b7b153de6cdd
Then renamed to `_co_code_adaptive` in
https://github.com/python/cpython/commit/2bde6827ea4f136297b2d882480b981ff26262b6

The opportunity is also taken to move `mro` out of the `Python 2 functions` section,
as `mro` is available in Python 3, hence making the comment confusing.

Part-of: odoo/odoo#151989

odoo/tools/safe_eval.py

@@ -50,13 +50,15 @@ for module in _ALLOWED_MODULES:
     __import__(module)
 
 
-_UNSAFE_ATTRIBUTES = {
+_UNSAFE_ATTRIBUTES = [
     # Frames
     'f_builtins', 'f_code', 'f_globals', 'f_locals',
     # Python 2 functions
-    'func_code', 'func_globals', 'mro',
+    'func_code', 'func_globals',
     # Code object
-    'co_code',
+    'co_code', '_co_code_adaptive',
+    # Method resolution order,
+    'mro',
     # Tracebacks
     'tb_frame',
     # Generators
@@ -65,8 +67,7 @@ _UNSAFE_ATTRIBUTES = {
     'cr_await', 'cr_code', 'cr_frame',
     # Coroutine generators
     'ag_await', 'ag_code', 'ag_frame',
-
-}
+]
 
 
 def to_opcodes(opnames, _opmap=opmap):