Fix for Clang tidy, needed for fbcode include (facebook#44655)

Summary:
Pull Request resolved: facebook#44655

Required to compile with clang

This is because previously it was comparing size_t with int which is not allowed under compilation with clang

Changelog: [Internal] [Fixed] - Replaced old style for loop with new style to avoid clang errors with size_t to int comparisons

Differential Revision: D57721635

fbshipit-source-id: 2738f7b415d668c37536f7f93b2e0985fa2cc5e6

packages/react-native/ReactCommon/react/renderer/core/propsConversions.h

@@ -63,9 +63,9 @@ void fromRawValue(
     auto length = items.size();
     result.clear();
     result.reserve(length);
-    for (size_t i = 0; i < length; i++) {
+    for (auto& item : items) {
       T itemResult;
-      fromRawValue(context, items.at(i), itemResult);
+      fromRawValue(context, item, itemResult);
       result.push_back(itemResult);
     }
     return;
@@ -89,9 +89,9 @@ void fromRawValue(
     auto length = items.size();
     result.clear();
     result.reserve(length);
-    for (int i = 0; i < length; i++) {
+    for (auto& item : items) {
       T itemResult;
-      fromRawValue(context, items.at(i), itemResult);
+      fromRawValue(context, item, itemResult);
       result.push_back(itemResult);
     }
     return;