Include inEdges in Graph String()

[pierDipi]

This helps with debugging

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.

Project coverage is 64.10%. Comparing base (eaaab21) to head (1914a3c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/graph/types.go	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8406      +/-   ##
==========================================
- Coverage   64.12%   64.10%   -0.03%     
==========================================
  Files         388      388              
  Lines       23345    23355      +10     
==========================================
  Hits        14971    14971              
- Misses       7579     7589      +10     
  Partials      795      795              

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[Cali0707]

/lgtm
/approve

Thanks for adding this @pierDipi !

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Cali0707, pierDipi

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