fix(core): correct parameter order in neu_req_del_tag_copy

[ZhouBox]

• Fix reversed parameter order in neu_req_del_tag_copy call at manager.c:1488
• Add missing return statement on strdup failure in neu_req_del_tag_copy function

[codecov-commenter]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 64.89%. Comparing base (a485bb6) to head (118dfc0).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
include/neuron/msg.h	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2731   +/-   ##
=======================================
  Coverage   64.88%   64.89%           
=======================================
  Files         125      125           
  Lines       30649    30650    +1     
=======================================
+ Hits        19888    19889    +1     
  Misses      10761    10761           

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