fix: render images on canvas (#4234)

Fixes #4232

Broke it when serialized as unparsed without assets transform.

apps/builder/app/canvas/shared/styles.ts

@@ -146,14 +146,16 @@ const getEphemeralProperty = (styleDecl: StyleDecl) => {
 // wrap normal style value with var(--namespace, value) to support ephemeral styles updates
 // between all token usages
 const toVarValue = (styleDecl: StyleDecl): undefined | VarValue => {
-  const { value } = styleDecl;
   return {
     type: "var",
     // var style value is relying on name without leading "--"
     // escape complex selectors in state like ":hover"
     // setProperty and removeProperty escape automatically
     value: CSS.escape(getEphemeralProperty(styleDecl).slice(2)),
-    fallback: { type: "unparsed", value: toValue(value) },
+    fallback: {
+      type: "unparsed",
+      value: toValue(styleDecl.value, $transformValue.get()),
+    },
   };
 };