feat: realistic instance hiding

[mdjastrzebski]

Summary

Align render with React Native's hidden-instance behavior by transforming suspended hidden host props to include display: 'none'.

This updates the custom test-renderer root options in src/render.tsx to attach hidden styles through transformHiddenInstanceProps, including the case where an element previously had no style prop at all.

Test plan

1. Run yarn test src/__tests__/render.test.tsx --runInBand

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.37%. Comparing base (e3a3f68) to head (88120d1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1898   +/-   ##
=======================================
  Coverage   98.36%   98.37%           
=======================================
  Files          79       79           
  Lines        1471     1476    +5     
  Branches      408      409    +1     
=======================================
+ Hits         1447     1452    +5     
  Misses         24       24           

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