Fixed box resizing in Journey Diagrams

[nour0205]

📑 Summary

This PR fixes the issue where boxes in the Journey Diagram did not automatically adjust to accommodate large amounts of text. The boxes now dynamically resize based on the text content, ensuring the diagram displays correctly.

Resolves #6243

📏 Design Decisions

The implementation adjusts the height of the boxes dynamically by calculating the required space based on the length of the text and the number of lines it occupies. Additionally, the diagram's viewBox and height are updated to prevent cropping. These changes ensure proper rendering regardless of the amount of text in the boxes.

📋 Tasks

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• 📖 have read the contribution guidelines
• 💻 have added necessary unit/e2e tests.
• 📓 have added documentation. Make sure MERMAID_RELEASE_VERSION is used for all new features.
• 🦋 If your PR makes a change that should be noted in one or more packages' changelogs, generate a changeset by running pnpm changeset and following the prompts. Changesets that add features should be minor and those that fix bugs should be patch. Please prefix changeset messages with feat:, fix:, or chore:.

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commit: e5ad6ba

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 50 lines in your changes missing coverage. Please review.

Project coverage is 4.47%. Comparing base (8dd0e7a) to head (e5ad6ba).

Files with missing lines	Patch %	Lines
...kages/mermaid/src/diagrams/user-journey/svgDraw.js	0.00%	35 Missing ⚠️
...rmaid/src/diagrams/user-journey/journeyRenderer.ts	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #6246      +/-   ##
==========================================
- Coverage     4.47%   4.47%   -0.01%     
==========================================
  Files          385     384       -1     
  Lines        54191   54220      +29     
  Branches       598     623      +25     
==========================================
  Hits          2425    2425              
- Misses       51766   51795      +29     

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
...rmaid/src/diagrams/user-journey/journeyRenderer.ts	0.00% <0.00%> (ø)
...kages/mermaid/src/diagrams/user-journey/svgDraw.js	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes