revert #17244

Author: dummdidumm

packages/svelte/src/internal/client/dom/blocks/each.js

@@ -657,10 +657,6 @@ function link(state, prev, next) {
 		state.first = next;
 		state.effect.first = next && next.e;
 	} else {
-		if (prev.e === state.effect.last && next !== null) {
-			state.effect.last = next.e;
-		}
-
 		if (prev.e.next) {
 			prev.e.next.prev = null;
 		}
@@ -669,13 +665,7 @@ function link(state, prev, next) {
 		prev.e.next = next && next.e;
 	}
 
-	if (next === null) {
-		state.effect.last = prev && prev.e;
-	} else {
-		if (next.e === state.effect.last && prev === null) {
-			state.effect.last = next.e.prev;
-		}
-
+	if (next !== null) {
 		if (next.e.prev) {
 			next.e.prev.next = null;
 		}