chore: add description for rejectResponderTermination prop (react#28001)

Summary:
Added description for rejectResponderTermination prop for the TextInput, which seemed to have been deleted.
Descriptions are taken from https://github.com/facebook/react-native/pull/16755/files

## Changelog

[Internal] [Added] - Add description for rejectResponderTermination prop for TextInput
Pull Request resolved: react#28001

Test Plan: This PR only changes comment, which has no effect on actual function.

Differential Revision: D19820886

Pulled By: TheSavior

fbshipit-source-id: 5cbaafcbae0bdbf6932ef9c7c0c1a75cd6d8794e

Author: Naturalclar

Libraries/Components/TextInput/TextInput.js

@@ -276,6 +276,10 @@ type IOSProps = $ReadOnly<{|
   passwordRules?: ?PasswordRules,
 
   /*
+   * If `true`, allows TextInput to pass touch events to the parent component.
+   * This allows components to be swipeable from the TextInput on iOS,
+   * as is the case on Android by default.
+   * If `false`, TextInput always asks to handle the input (except when disabled).
    * @platform ios
    */
   rejectResponderTermination?: ?boolean,