[Architecture/fix] Throw explicit error for invalid configuration causing overlapping nodes

[NicolasNewman]

📑 Summary

To avoid user confusion, Architecture diagrams now explicitly throw an error if two services attempt to connect to the same side of another service.

Resolves #6120

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Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 4.47%. Comparing base (d27d4ab) to head (6fce403).
Report is 12 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ermaid/src/diagrams/architecture/architectureDb.ts	0.00%	16 Missing ⚠️
...aid/src/diagrams/architecture/architectureTypes.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #6176      +/-   ##
==========================================
- Coverage     4.47%   4.47%   -0.01%     
==========================================
  Files          385     385              
  Lines        54190   54207      +17     
  Branches       598     598              
==========================================
  Hits          2425    2425              
- Misses       51765   51782      +17     

Flag	Coverage Δ
unit	4.47% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...aid/src/diagrams/architecture/architectureTypes.ts	0.00% <0.00%> (ø)
...ermaid/src/diagrams/architecture/architectureDb.ts	0.00% <0.00%> (ø)