fix(useScript): allow custom head instance

Author: harlan-zw

packages/vue/src/composables/useScript.ts

@@ -35,8 +35,8 @@ export type UseScriptContext<T extends Record<symbol | string, any>> =
 
 export function useScript<T extends Record<symbol | string, any> = Record<symbol | string, any>, U = Record<symbol | string, any>>(_input: UseScriptInput, _options?: UseScriptOptions<T, U>): UseScriptContext<UseFunctionType<UseScriptOptions<T, U>, T>> {
   const input = (typeof _input === 'string' ? { src: _input } : _input) as UseScriptResolvedInput
-  const head = injectHead()
   const options = _options || {}
+  const head = options.head || injectHead()
   // @ts-expect-error untyped
   options.head = head
   options.eventContext = getCurrentInstance()