[FIX] tests: remove chrome sandboxing

It appears that chrome headless with sandboxing is failing when running
containerized because it tries to use Linux namespaces.

With this commit, the no-sanbox optional arg is used to avoid this
issue.

Closes #26456
Closes #28053

odoo/tests/common.py

@@ -423,7 +423,8 @@ class ChromeBrowser():
             '--user-data-dir': self.user_data_dir,
             '--disable-translate': '',
             '--window-size': '1366x768',
-            '--remote-debugging-port': str(self.devtools_port)
+            '--remote-debugging-port': str(self.devtools_port),
+            '--no-sandbox': '',
         }
         cmd = [self.executable]
         cmd += ['%s=%s' % (k, v) if v else k for k, v in switches.items()]