[sf] Fix blur alpha for new sf frontend

- update the blur alpha when alpha changes
- also update layer stack ordering to match legacy order

Test: presubmit
Bug: 238781169

Change-Id: I6d122a9721a3de0f8b04e60ac21fa879b29b22e3
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
index 25cbe7a..ce7d37e 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
@@ -817,7 +817,8 @@
         snapshot.frameRateSelectionPriority = requested.frameRateSelectionPriority;
     }
 
-    if (forceUpdate || snapshot.changes.any(RequestedLayerState::Changes::Content)) {
+    if (forceUpdate || snapshot.changes.any(RequestedLayerState::Changes::Content) ||
+        snapshot.changes.any(RequestedLayerState::Changes::AffectsChildren)) {
         snapshot.color.rgb = requested.getColor().rgb;
         snapshot.isColorspaceAgnostic = requested.colorSpaceAgnostic;
         snapshot.backgroundBlurRadius = args.supportsBlur
@@ -1069,6 +1070,10 @@
     // touches from going outside the cloned area.
     if (path.isClone()) {
         snapshot.inputInfo.inputConfig |= gui::WindowInfo::InputConfig::CLONE;
+        // Cloned layers shouldn't handle watch outside since their z order is not determined by
+        // WM or the client.
+        snapshot.inputInfo.inputConfig.clear(gui::WindowInfo::InputConfig::WATCH_OUTSIDE_TOUCH);
+
         mNeedsTouchableRegionCrop.insert(path);
     }
 }