Add isVirtual flag to SF trace display

Bug: 140855415
Test: build winscope, take a SF trace and check if the isVirtual flag
appears on the display

Change-Id: I5f6e5dba9f73f3464371166fb7ec8b589c3859c3
diff --git a/tools/winscope/src/flickerlib/layers/LayerTraceEntry.ts b/tools/winscope/src/flickerlib/layers/LayerTraceEntry.ts
index 86e7836..8213c2d 100644
--- a/tools/winscope/src/flickerlib/layers/LayerTraceEntry.ts
+++ b/tools/winscope/src/flickerlib/layers/LayerTraceEntry.ts
@@ -72,7 +72,8 @@
         proto.layerStack,
         toSize(proto.size),
         toRect(proto.layerStackSpaceRect),
-        toTransform(proto.transform)
+        toTransform(proto.transform),
+        proto.isVirtual
     )
 }