react 19 support

[victororlyk]

Clear and concise description of the problem

As a developer using Big Calendar, I want support for React 19 to ensure compatibility with the latest React features and improvements.

Suggested solution

In the relevant modules and dependencies, ensure compatibility with React 19 by:

• Updating peer dependencies to include React 19.
• Testing core functionalities of Big Calendar with React 19.
• Addressing any breaking changes introduced by React 19

Alternative

If full support for React 19 cannot be achieved immediately, providing partial support or clear documentation on known issues and workarounds would be helpful.

Additional context

React 19 introduces specific new features and breaking changes, which may benefit Big Calendar users. Adding support for React 19 will ensure the library remains future-proof and widely usable.

Validations

• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Would you like to open a PR for this feature?

• I'm willing to open a PR