safe_eval: 3.11 compatibility

Complement on 1e35315 (odoo#112450):
alongside the split between forwards and backwards jump we missed that
3.11 has a specialized version of each for the `is None` and `is not
None` cases. A use of that was added in standard in 16.5 (odoo#120446) but
more generally it makes sense that server actions would support
conditional tests against `None`, probably...

odoo/tools/safe_eval.py

@@ -127,6 +127,9 @@ def to_opcodes(opnames, _opmap=opmap):
     # replacement of POP_JUMP_IF_TRUE and POP_JUMP_IF_FALSE
     'POP_JUMP_FORWARD_IF_FALSE', 'POP_JUMP_FORWARD_IF_TRUE',
     'POP_JUMP_BACKWARD_IF_FALSE', 'POP_JUMP_BACKWARD_IF_TRUE',
+    # special case of the previous for IS NONE / IS NOT NONE
+    'POP_JUMP_FORWARD_IF_NONE', 'POP_JUMP_BACKWARD_IF_NONE',
+    'POP_JUMP_FORWARD_IF_NOT_NONE', 'POP_JUMP_BACKWARD_IF_NOT_NONE',
     #replacement of JUMP_ABSOLUTE
     'JUMP_BACKWARD',
     #replacement of JUMP_IF_NOT_EXC_MATCH