fix(prebuild): use Flow comment types in xcframework.js

Bare `param: string` is not valid JS. Node 26 fails ios-prebuild at
normalizeMacOSFrameworkBinaries; keep the types as /*: string */.

Author: xesrevinu

packages/react-native/scripts/ios-prebuild/xcframework.js

@@ -241,8 +241,8 @@ function buildXCFrameworks(
 }
 
 function normalizeMacOSFrameworkBinaries(
-  outputPath: string,
-  buildFolder: string,
+  outputPath /*: string */,
+  buildFolder /*: string */,
 ) {
   const macOSSlices = fs
     .readdirSync(outputPath)