Don't trigger animation events when paused (#15677)

# Objective

Pausing the `animated_fox` example perfectly as one of the feet hits the
ground causes the event to be triggered every frame.

Context: #15538

## Solution

Don't trigger animation events if the animation is paused.

## Testing

Ran the example, I no longer see the issue.

crates/bevy_animation/src/lib.rs

@@ -1143,6 +1143,7 @@ pub fn animate_targets(
                             continue;
                         };
 
+                        if !active_animation.paused {
                             // Trigger all animation events that occurred this tick, if any.
                             if let Some(triggered_events) = TriggeredEvents::from_animation(
                                 AnimationEventTarget::Node(target_id),
@@ -1164,6 +1165,7 @@ pub fn animate_targets(
                                     });
                                 }
                             }
+                        }
 
                         let Some(curves) = clip.curves_for_target(target_id) else {
                             continue;