fix: review suggestions

Author: chmjkb

packages/react-native-executorch/common/rnexecutorch/data_processing/Numerical.cpp

@@ -24,6 +24,11 @@ void normalize(std::span<float> span) {
     sum += val * val;
   }
 
+  // Early return if all values are 0
+  if (sum == 0.0f) {
+    return;
+  }
+
   // Preventing divison by 0
   float norm = std::max(std::sqrt(sum), 1e-9f);
   for (auto &val : span) {

packages/react-native-executorch/src/modules/natural_language_processing/TextEmbeddingsModule.ts

@@ -21,6 +21,7 @@ export class TextEmbeddingsModule extends BaseNonStaticModule {
       paths[1] || ''
     );
     if (meanPooling === undefined) {
+      this.meanPooling = true;
       console.warn(
         "You haven't passed meanPooling flag. It is defaulting to true, if your model doesn't require mean pooling it may return wrong results."
       );