fix(types): remove explicit return type annotation requirement for this inference in computed options (#4221)

packages/reactivity/src/computed.ts

@@ -12,7 +12,7 @@ export interface WritableComputedRef<T> extends Ref<T> {
   readonly effect: ReactiveEffect<T>
 }
 
-export type ComputedGetter<T> = (ctx?: any) => T
+export type ComputedGetter<T> = (...args: any[]) => T
 export type ComputedSetter<T> = (v: T) => void
 
 export interface WritableComputedOptions<T> {