fix: improved memory profile for transitions/animations (#12796)

* fix: improved memory profile for transitions/animations

* put back the catch

.changeset/thin-papayas-tap.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: improved memory profile for transitions/animations

packages/svelte/src/internal/client/dom/elements/transitions.js

@@ -448,9 +448,15 @@ function animate(element, options, counterpart, t2, on_finish, on_abort) {
 
 	return {
 		abort: () => {
-			animation?.cancel();
+			if (animation) {
+				animation.cancel();
+				// This prevents memory leaks in Chromium
+				animation.effect = null;
+			}
 			task?.abort();
 			on_abort?.();
+			on_finish = undefined;
+			on_abort = undefined;
 		},
 		deactivate: () => {
 			on_finish = undefined;