[FIX] base: traceback decoration cleanup

When 3.11 added PEP 657 fine-grained error locations, squiggles were
already possible[^1] but apparently we missed that in the cleanup
regex because those didn't show up in the messages we cared about.

With Python 3.13's improvements (sic...)[^2] this is not the case
anymore, and the tracebacks from testing the test suite do get a bunch
of squiggles which we need to learn to clean.

[^1]: https://docs.python.org/3/whatsnew/3.11.html#whatsnew311-pep657
[^2]: https://docs.python.org/3/whatsnew/3.13.html#improved-error-messages

Part-of: #220858
Related: odoo/enterprise#91149
Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

Author: xmo-odoo

odoo/addons/base/tests/test_test_suite.py

@@ -134,7 +134,7 @@ def _clean_message(self, message):
         message = re.sub(r'line \d+', 'line $line', message)
         message = re.sub(r'py:\d+', 'py:$line', message)
         message = re.sub(r'decorator-gen-\d+', 'decorator-gen-xxx', message)
-        message = re.sub(r'^\s*\^+\s*\n', '', message, flags=re.MULTILINE)
+        message = re.sub(r'^\s*~*\^+~*\s*\n', '', message, flags=re.MULTILINE)
         message = message.replace(f'"{root_path}', '"/root_path/odoo')
         message = message.replace(f'"{python_path}', '"/usr/lib/python')
         message = message.replace('\\', '/')