fix: set volume through DOM property (#12485)

Already works when using spread attributes, but not when setting it on its own
fixes #12029

.changeset/shiny-kangaroos-move.md

@@ -0,0 +1,5 @@
+---
+"svelte": patch
+---
+
+fix: set `volume` through DOM property rather than attribute

packages/svelte/src/compiler/phases/constants.js

@@ -4,6 +4,7 @@ export const DOMProperties = [
 	...Object.values(AttributeAliases),
 	'value',
 	'inert',
+	'volume',
 	...DOMBooleanAttributes
 ];