Migrate to react 19

[xobotyi]

Since https://github.com/ver0-project/react-hooks-testing allows for proper hooks testing (with SSR harness and etc.) it is possible to migrate to react 19 with less bloodshed.

Though this change does not introduce any braking changes to package itself, since it merge we will only aim for support of React 19, backward compatibility will only remain uninteantionally.

[codecov]

Codecov Report

❌ Patch coverage is 98.09524% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.94%. Comparing base (e640550) to head (734fbbd).
⚠️ Report is 6 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/useCookieValue/index.ts	75.00%	1 Missing ⚠️
src/useStorageValue/index.ts	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1661      +/-   ##
==========================================
+ Coverage   97.79%   97.94%   +0.15%     
==========================================
  Files          63       64       +1     
  Lines        1859     1802      -57     
  Branches      481      479       -2     
==========================================
- Hits         1818     1765      -53     
+ Misses         39       35       -4     
  Partials        2        2              

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