fix: scatterplot bug showing no obsm

[dannda]

Description

refactor ObsmList params to useMemo to avoid race conditions

fixes #192

Type of change

• 🐛 Bug fix (non-breaking change that resolves an issue)
• ✨ New feature (non-breaking change that adds functionality)
• ⚡ Optimisation (non-breaking improvement to performance or efficiency)
• 🧩 Documentation (adds or improves documentation)
• 🧱 Maintenance (refactor, dependency update, CI/CD, etc.)
• 🔥 Breaking change (fix or feature that causes existing functionality to change)

Checklist

• All tests pass (eg. npm test)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)
• Documentation updated (if required)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 15.58%. Comparing base (5135761) to head (5a8b59b).
⚠️ Report is 2 commits behind head on dev.

Files with missing lines	Patch %	Lines
src/lib/components/obsm-list/ObsmList.jsx	0.00%	11 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #197   +/-   ##
=======================================
  Coverage   15.58%   15.58%           
=======================================
  Files          62       62           
  Lines        2092     2092           
  Branches      504      504           
=======================================
  Hits          326      326           
  Misses       1706     1706           
  Partials       60       60           

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[davehorsfall]

🎉 This PR is included in version 1.4.5 🎉

The release is available on GitHub release

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