Upgrade @types/react to 19 and run codemod (attempt 2) (#8918)

* update dependencies

* rm `import type React from 'react'`

* run codemods

* patch discord types

* update types/react-dom

* Update yarn.lock

src/view/com/composer/Composer.tsx

@@ -174,7 +174,7 @@ export const ComposePost = ({
   videoUri: initVideoUri,
   cancelRef,
 }: Props & {
-  cancelRef?: React.RefObject<CancelRef>
+  cancelRef?: React.RefObject<CancelRef | null>
 }) => {
   const {currentAccount} = useSession()
   const agent = useAgent()