Summary:
This pull request makes the following changes to the script `scripts/generate-rncore.js`:
* Adds a missing argument to the call of `generate-tests.js`
* Ran `chmod +x generate-rncore.sh` so the script is executable
## Changelog
[Internal] [Fixed] - Updated `generate-rncore.sh` for recent versions of codegen
Pull Request resolved: https://github.com/facebook/react-native/pull/26477
Test Plan: `(cd scripts && ./generate-rncore.sh)` works perfectly now.
Differential Revision: D17439772
Pulled By: TheSavior
fbshipit-source-id: 141efc54aa45aa38dc537f65e425959666f33b3a
empyrical
ca0d87db6e