Default init custom C++ TM struct properties (#54391)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/54391

Changelog: [Internal][Fixed] Default init custom C++ TM struct properties

Right now we don't do it and produce code as:
```
template <typename P0, typename P1, typename P2, typename P3, typename P4, typename P5, typename P6>
struct NativeEditableObjectModulePropertyVal {
  P0 classOrList;
  P1 commonFields;
  P2 desc;
  P3 isDefault;
  P4 isSet;
  P5 scriptValue;
  P6 value;
  bool operator==(const NativeEditableObjectModulePropertyVal &other) const {
    return classOrList == other.classOrList && commonFields == other.commonFields && desc == other.desc && isDefault == other.isDefault && isSet == other.isSet && scriptValue == other.scriptValue && value == other.value;
  }
};
```

Now we do:
```
template <typename P0, typename P1, typename P2, typename P3, typename P4, typename P5, typename P6>
struct NativeEditableObjectModulePropertyVal {
  P0 classOrList{};
  P1 commonFields{};
  P2 desc{};
  P3 isDefault{};
  P4 isSet{};
  P5 scriptValue{};
  P6 value{};
  bool operator==(const NativeEditableObjectModulePropertyVal &other) const {
    return classOrList == other.classOrList && commonFields == other.commonFields && desc == other.desc && isDefault == other.isDefault && isSet == other.isSet && scriptValue == other.scriptValue && value == other.value;
  }
};
```

Reviewed By: sbuggay, lenaic

Differential Revision: D86142954

fbshipit-source-id: 989e81c55b1fad7e1e58ea89461f064772143c9d