fix: include `segments` in upstream changes to hrm and svelte head

packages/svelte/src/internal/client/dev/hmr.js

@@ -60,7 +60,7 @@ export function hmr(fn) {
 			// Forward the start/end DOM nodes from the inner effect to the outer active effect
 			// which would get them if the HMR wrapper wasn't there. Do this inside the block not
 			// outside so that HMR updates to the component will also update the nodes on the
-			// active effect. We copy only start/end, not the full nodes object, so that
+			// active effect. We copy only the removal ranges, not the full nodes object, so that
 			// pause_children does not collect transitions from both effects and fire outroend twice.
 			var inner_nodes = effect.nodes;
 			if (inner_nodes) {
@@ -68,8 +68,15 @@ export function hmr(fn) {
 				if (ae.nodes) {
 					ae.nodes.start = inner_nodes.start;
 					ae.nodes.end = inner_nodes.end;
+					ae.nodes.segments = inner_nodes.segments;
 				} else {
-					ae.nodes = { start: inner_nodes.start, end: inner_nodes.end, a: null, t: null };
+					ae.nodes = {
+						start: inner_nodes.start,
+						end: inner_nodes.end,
+						segments: inner_nodes.segments,
+						a: null,
+						t: null
+					};
 				}
 			}
 		}, EFFECT_TRANSPARENT);

packages/svelte/src/internal/client/dom/blocks/svelte-head.js

@@ -64,7 +64,7 @@ export function head(hash, render_fn) {
 
 			if (!hydrating) {
 				if (e.nodes === null) {
-					e.nodes = { start: anchor, end: anchor, a: null, t: null };
+					e.nodes = { start: anchor, end: anchor, segments: null, a: null, t: null };
 				} else {
 					e.nodes.end = anchor;
 				}