avm2: `event.eventPhase` is enumerated from 1

core/src/avm2/events.rs

@@ -25,9 +25,9 @@ pub enum EventPhase {
 impl Into<u32> for EventPhase {
     fn into(self) -> u32 {
         match self {
-            Self::Capturing => 0,
-            Self::AtTarget => 1,
-            Self::Bubbling => 2,
+            Self::Capturing => 1,
+            Self::AtTarget => 2,
+            Self::Bubbling => 3,
         }
     }
 }

core/src/avm2/object/event_object.rs

@@ -108,7 +108,10 @@ impl<'gc> TObject<'gc> for EventObject<'gc> {
             mc,
             format!(
                 "[Event type=\"{}\" bubbles={} cancelable={} eventPhase={}]",
-                event_type, bubbles, cancelable, phase
+                event_type,
+                bubbles,
+                cancelable,
+                phase - 1
             ),
         )
         .into())