Update CHANGELOG.md

Author: tanhauhau

CHANGELOG.md

@@ -6,6 +6,7 @@
 * Fix `class:` directive updates with `<svelte:element>` ([#7521](https://github.com/sveltejs/svelte/issues/7521), [#7571](https://github.com/sveltejs/svelte/issues/7571))
 * Harden attribute escaping during ssr ([#7530](https://github.com/sveltejs/svelte/pull/7530))
 * Add `ComponentType` and `ComponentProps` convenience types ([#6770](https://github.com/sveltejs/svelte/pull/6770))
+* Fix empty component not properly destroyed ([#7488](https://github.com/sveltejs/svelte/issues/7488))
 
 ## 3.48.0