SF: Enable continuous transaction tracing on userdebug builds

Test: presubmit
Bug: 200284593
Change-Id: I2e86772c3959ef13f7f336af37ca24350428902a
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 9584592..8eecc41 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -493,7 +493,8 @@
 
     enableLatchUnsignaledConfig = getLatchUnsignaledConfig();
 
-    mTransactionTracingEnabled = property_get_bool("debug.sf.enable_transaction_tracing", false);
+    mTransactionTracingEnabled =
+            !mIsUserBuild && property_get_bool("debug.sf.enable_transaction_tracing", true);
     if (mTransactionTracingEnabled) {
         mTransactionTracing.enable();
     }