fix concurrent write map issue in egctl

[zirain]

fixes: #6627

[arkodg]

🙈 thanks

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.01%. Comparing base (bebede5) to head (960ec7b).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/cmd/egctl/config.go	0.00%	5 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (60.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6628      +/-   ##
==========================================
- Coverage   71.08%   71.01%   -0.08%     
==========================================
  Files         225      225              
  Lines       39152    39155       +3     
==========================================
- Hits        27832    27804      -28     
- Misses       9715     9739      +24     
- Partials     1605     1612       +7     

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