Adding space to $(inherited) string to avoid merging of inherited and… (#45520)

Summary:
Added space to $(inherited) string to avoid creation of wrong cpp flags in RCTAppDelegate podspec

<img width="1157" alt="Screenshot 2024-07-18 at 8 51 19 PM" src="https://github.com/user-attachments/assets/29d32d08-e81f-4c25-b8ee-5dccc0f620ea">

## Changelog:

[IOS] [FIXED] - Building of iOS project when RCTAppDelegate is used in the project

Pull Request resolved: https://github.com/facebook/react-native/pull/45520

Test Plan: To test this you can simply change in your node modules and run pod install, the build will now work successfully

Reviewed By: cipolleschi

Differential Revision: D59950906

Pulled By: arushikesarwani94

fbshipit-source-id: 0d58620aa0be7ac4fcbcd309f06df0eef7844016