fix: prevent false-positive ownership validations due to hot reload (#15154)

The component identity could change due to HMR, so we fall back to checking the filenames as well

fixes #14746

Author: dummdidumm

.changeset/ten-cougars-look.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: prevent false-positive ownership validations due to hot reload

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

@@ -220,6 +220,10 @@ function has_owner(metadata, component) {
 
 	return (
 		metadata.owners.has(component) ||
+		// This helps avoid false positives when using HMR, where the component function is replaced
+		[...metadata.owners].some(
+			(owner) => /** @type {any} */ (owner)[FILENAME] === /** @type {any} */ (component)?.[FILENAME]
+		) ||
 		(metadata.parent !== null && has_owner(metadata.parent, component))
 	);
 }