Update @toolpad/core to React 19

[bharatkashyap]

No description provided.

[jy95]

+1

[kirill-konshin]

At the very least the return from useActionState should be compatible with signIn prop of SignInPage:

const [whatever, action, isPending] = useActionState(
  async (_, formData) => {
    // logic
  },
  {},
);

// this one works but emits error in console
<SignInPage signIn={(provider, formData) => action(formData)} />

// this one results in full screen error
<SignInPage signIn={action} />

Error: An async function was passed to useActionState, but it was dispatched outside of an action context. This is likely not what you intended. Either pass the dispatch function to an action prop, or dispatch manually inside startTransition