Properly handle Xcode targets with spaces in their names (#42220)

Summary:
Properly handle targets with spaces in their names

Use quotes around the argument to basename path. Ensures this succeeds when the Xcode target name has spaces.

example:
```sh
#!/bin/sh
SOURCEMAP_FILE="ArchiveIntermediates/Jane Doe/IntermediateBuildFilesPath/Jane Doe.build/Release-iphoneos/JaneDoe.build/DerivedSources/main.jsbundle.map"
BN_SOURCEMAP_FILE="$(basename $SOURCEMAP_FILE)"
echo $BN_SOURCEMAP_FILE
```

output:
```
Jane Jane main.jsbundle.map
```

```sh
#!/bin/sh
SOURCEMAP_FILE="ArchiveIntermediates/Jane Doe/IntermediateBuildFilesPath/Jane Doe.build/Release-iphoneos/JaneDoe.build/DerivedSources/main.jsbundle.map"
BN_SOURCEMAP_FILE="$(basename "$SOURCEMAP_FILE")"
echo $BN_SOURCEMAP_FILE
```

output:
```
main.jsbundle.map
```

## Changelog:
[iOS] [Fixed] - Fix support for SOURCEMAP_FILE path containing spaces

## Related
#40937

Pull Request resolved: #42220

Reviewed By: christophpurrer

Differential Revision: D52650491

Pulled By: arushikesarwani94

fbshipit-source-id: e42b8a0d018b37fb558abd53d765fbdd676c51a2

packages/react-native/scripts/react-native-xcode.sh

@@ -127,7 +127,7 @@ fi
 PACKAGER_SOURCEMAP_FILE=
 if [[ $EMIT_SOURCEMAP == true ]]; then
   if [[ $USE_HERMES != false ]]; then
-    PACKAGER_SOURCEMAP_FILE="$CONFIGURATION_BUILD_DIR/$(basename $SOURCEMAP_FILE)"
+    PACKAGER_SOURCEMAP_FILE="$CONFIGURATION_BUILD_DIR/$(basename "$SOURCEMAP_FILE")"
   else
     PACKAGER_SOURCEMAP_FILE="$SOURCEMAP_FILE"
   fi