Check active zone when adding new node

[superstar54]

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[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 91.57%. Comparing base (4baf63b) to head (84a8cbf).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/node_graph/decorator.py	66.66%	1 Missing ⚠️
src/node_graph/socket.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
- Coverage   91.62%   91.57%   -0.06%     
==========================================
  Files          44       44              
  Lines        2914     2920       +6     
==========================================
+ Hits         2670     2674       +4     
- Misses        244      246       +2     

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