Fix nxos terminal regex to parse xml response (#31283)

Fixes #26130

Modify nxos terminal regex to parse a xml response.

lib/ansible/plugins/terminal/nxos.py

@@ -28,7 +28,7 @@ from ansible.errors import AnsibleConnectionFailure
 class TerminalModule(TerminalBase):
 
     terminal_stdout_re = [
-        re.compile(br'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-_.]*[>|#|%](?:\s*)$'),
+        re.compile(br'[\r\n](?!\s*<)?[a-zA-Z_]{1}[a-zA-Z0-9-_.]*[>|#|%](?:\s*)$'),
         re.compile(br'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-_.]*\(.+\)#(?:\s*)$')
     ]