feat: Schema 4.0.0 tissue_type

[MillenniumFalconMechanic]

Reason for Change

• #6184

Changes

• Added handling of Schema 4.0.0 tissue_type.

Testing

• Tested with updated descendant and ancestor fixtures in rdev.
• Checked cell type fixtures are unchanged.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5cda022) 84.72% compared to head (b2a6069) 84.72%.
Report is 1 commits behind head on main.

❗ Current head b2a6069 differs from pull request most recent head 926b591. Consider uploading reports for the commit 926b591 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #701   +/-   ##
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  Coverage   84.72%   84.72%           
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  Files          19       19           
  Lines        1820     1820           
=======================================
  Hits         1542     1542           
  Misses        278      278           

Flag	Coverage Δ
unittests	84.72% <ø> (ø)

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