Send same-URI Image source changes in Props 2.0 payloads

ImageProps::getDiffProps now compares every serialized field of each source
instead of ImageSource::operator==, which stays the type-and-URI identity used
for image requests. A same-URI change to the headers, cache policy, size or
scale now sends the source and its headers.

Author: bartlomiejbloniarz

packages/react-native/ReactCommon/react/renderer/components/image/ImageProps.cpp

@@ -12,6 +12,9 @@
 #include <react/renderer/debug/debugStringConvertibleUtils.h>
 #include <react/renderer/graphics/Color.h>
 
+#include <algorithm>
+#include <tuple>
+
 namespace facebook::react {
 
 ImageProps::ImageProps(
@@ -145,6 +148,30 @@ static folly::dynamic convertEdgeInsets(const EdgeInsets& edgeInsets) {
   return edgeInsetsResult;
 }
 
+// ImageSource::operator== compares only the request identity: type and URI.
+static bool hasSamePayload(const ImageSource& lhs, const ImageSource& rhs) {
+  return std::tie(
+             lhs.type,
+             lhs.uri,
+             lhs.bundle,
+             lhs.scale,
+             lhs.size,
+             lhs.body,
+             lhs.method,
+             lhs.cache,
+             lhs.headers) ==
+      std::tie(
+             rhs.type,
+             rhs.uri,
+             rhs.bundle,
+             rhs.scale,
+             rhs.size,
+             rhs.body,
+             rhs.method,
+             rhs.cache,
+             rhs.headers);
+}
+
 ComponentName ImageProps::getDiffPropsImplementationTarget() const {
   return "Image";
 }
@@ -158,7 +185,7 @@ folly::dynamic ImageProps::getDiffProps(const Props* prevProps) const {
 
   folly::dynamic result = ViewProps::getDiffProps(oldProps);
 
-  if (sources != oldProps->sources) {
+  if (!std::ranges::equal(sources, oldProps->sources, hasSamePayload)) {
     auto sourcesArray = folly::dynamic::array();
     for (const auto& source : sources) {
       sourcesArray.push_back(toDynamic(source));