replace unshift with iterating ordered_effects in reverse

Author: hmnd

packages/svelte/src/internal/client/reactivity/batch.js

@@ -610,19 +610,18 @@ function flush_queued_effects(effects) {
 
 					// Run effects in order from ancestor to descendant, else we could run into nullpointers
 					/** @type {Effect[]} */
-					const ordered_effects = [];
+					const ordered_effects = [e];
 					let ancestor = e.parent;
 					while (ancestor !== null) {
 						if (eager_block_effects.has(ancestor)) {
 							eager_block_effects.delete(ancestor);
-							ordered_effects.unshift(ancestor);
+							ordered_effects.push(ancestor);
 						}
 						ancestor = ancestor.parent;
 					}
 
-					ordered_effects.push(e);
-
-					for (const e of ordered_effects) {
+					for (let j = ordered_effects.length - 1; j >= 0; j--) {
+						const e = ordered_effects[j];
 						// Skip eager effects that have already been unmounted
 						if ((e.f & (DESTROYED | INERT)) !== 0) continue;
 						update_effect(e);