Revert "Revert "SF: enable latch unsignaled for single layer by default""

This reverts commit eb1c3df2944e1bc8b7e6b77759fd7b926f8fb53c.

Reason for revert: b/220907055 fixed by ag/16984229

Change-Id: Icdcef1f140412438b3c6a7b9f3fbaec62d29338f
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index dc88793..4e5e6aa 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -507,7 +507,7 @@
         return LatchUnsignaledConfig::Always;
     }
 
-    if (base::GetBoolProperty("debug.sf.auto_latch_unsignaled"s, false)) {
+    if (base::GetBoolProperty("debug.sf.auto_latch_unsignaled"s, true)) {
         return LatchUnsignaledConfig::AutoSingleLayer;
     }