SF: check the correct layer state flags for latch unsignaled

A few bug fixes when processing unsignaled buffers.

Bug: 198190384
Test: SF unit tests
Change-Id: I67de78bda55e8f69a54bbd7417bd7446fde4b910
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
index 4f89cd9..30a6fbd 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
@@ -25,7 +25,7 @@
 
 static constexpr LatchUnsignaledConfig kLatchUnsignaledConfig[] = {
         LatchUnsignaledConfig::Always,
-        LatchUnsignaledConfig::Auto,
+        LatchUnsignaledConfig::AutoSingleLayer,
         LatchUnsignaledConfig::Disabled,
 };