chore: upgrade deps.

[morganney]

• Upgrade to react 19 peer deps.
• Remove vite umd build in favor of CDN + ESM.
• Upgrade dev deps.
• Update examples.
• Upgrade supported engines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.26%. Comparing base (c07aeac) to head (844aeea).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #90   +/-   ##
=======================================
  Coverage   98.26%   98.26%           
=======================================
  Files           7        7           
  Lines         575      578    +3     
  Branches      146      147    +1     
=======================================
+ Hits          565      568    +3     
  Misses         10       10           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.