fix: Elk rendering of Diamond shape intersections

[knsv]

📑 Summary

Elk rendering of Diamond shape can have incorrect intersection calculations

Resolves #6080

📏 Design Decisions

Handling of the intersection calculations but some things stand out. SImilar changes should be done for all shaoes wchich will lead to a bigger refactoring of how intersections are calculated, Also we should use enums for handling shape types.

📋 Tasks

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🦋 Changeset detected

Latest commit: 3753831

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@mermaid-js/layout-elk	Patch

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commit: 3753831

[codecov]

Codecov Report

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

Project coverage is 4.49%. Comparing base (d3b2c7e) to head (3753831).
Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/mermaid-layout-elk/src/render.ts	0.00%	15 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #6081   +/-   ##
=======================================
  Coverage     4.49%   4.49%           
=======================================
  Files          383     382    -1     
  Lines        53925   53915   -10     
  Branches       596     621   +25     
=======================================
  Hits          2425    2425           
+ Misses       51500   51490   -10     

Flag	Coverage Δ
unit	4.49% <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
packages/mermaid-layout-elk/src/render.ts	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes