fix(components): declare ui prop with PartialString when arrays in theme slots

src/runtime/types/utils.ts

@@ -12,3 +12,7 @@ export type GetObjectField<MaybeObject, Key extends string> = MaybeObject extend
 export type AcceptableValue = string | number | boolean | Record<string, any>
 
 export type ArrayOrWrapped<T> = T extends any[] ? T : Array<T>
+
+export type PartialString<T> = {
+  [K in keyof T]?: string
+}