Add log when user attempts to split with widget

Bug: 295467097
Flag: none

Change-Id: Ice6cdc7a2db85c8efca7d4e1bc74a0cdc367a9ab

src/com/android/launcher3/logging/StatsLogManager.java

@@ -704,6 +704,9 @@ public class StatsLogManager implements ResourceBasedOverride {
         @UiEvent(doc = "User tapped on install to private space system shortcut.")
         LAUNCHER_PRIVATE_SPACE_INSTALL_SYSTEM_SHORTCUT_TAP(1565),
 
+        @UiEvent(doc = "User attempted to create split screen with a widget")
+        LAUNCHER_SPLIT_WIDGET_ATTEMPT(1604)
+
         // ADD MORE
         ;