Quote "$NODE_BINARY" in react-native-xcode.sh (#21383)

Summary:
Fix build errors when path to $NODE_BINARY contains spaces:

error: Can't find '/Path/With Spaces/To/node' binary to build React Native bundle

Why would $NODE_BINARY contain spaces? In my case, I am using sentry-cli which wraps the NODE_BINARY in it's own executable. The local path to the project, and thus the $NODE_BINARY, contains a space on my GoCD build agent.

'/Users/go/Library/Application Support/Go Agent/pipelines/my-ios-app/node_modules/sentry/cli/sentry-cli

See getsentry/sentry-react-native#484 getsentry/sentry-react-native#389
Pull Request resolved: #21383

Differential Revision: D10851141

Pulled By: yungsters

fbshipit-source-id: f46853ac8b57957864e0d1a76b8513403223fccb

Author: sundbry

scripts/react-native-xcode.sh

@@ -88,7 +88,7 @@ nodejs_not_found()
   exit 2
 }
 
-type $NODE_BINARY >/dev/null 2>&1 || nodejs_not_found
+type "$NODE_BINARY" >/dev/null 2>&1 || nodejs_not_found
 
 # Print commands before executing them (useful for troubleshooting)
 set -x
@@ -105,7 +105,7 @@ fi
 
 BUNDLE_FILE="$DEST/main.jsbundle"
 
-$NODE_BINARY "$CLI_PATH" $BUNDLE_COMMAND \
+"$NODE_BINARY" "$CLI_PATH" $BUNDLE_COMMAND \
   $CONFIG_ARG \
   --entry-file "$ENTRY_FILE" \
   --platform ios \