React v19 support

[yyjlincoln]

Hi,

Thank you for your contribution in making this library available!

react@19 is now available, however the package.json specifies react@18 as the latest supported version in peerDeps. I have browsed through the code without testing and I thought it should work on 19. Can we please verify that and bump the peer deps?

Thank you :)

[mjakal]

Hi,

I forked the package and bumped the react/react-dom version to 19. The package has been deployed to npm, you can test it by running:

npm install multi-email-react-19