types(runtime-dom): export type `StyleValue` (#3718)

packages/runtime-dom/types/jsx.d.ts

@@ -232,7 +232,7 @@ interface AriaAttributes {
 }
 
 // Vue's style normalization supports nested arrays
-type StyleValue = string | CSSProperties | Array<StyleValue>
+export type StyleValue = string | CSSProperties | Array<StyleValue>
 
 export interface HTMLAttributes extends AriaAttributes, EventHandlers<Events> {
   innerHTML?: string