UI优化完善初版

platform/frontend-vue/node_modules/element-plus/lib/utils/arrays.d.ts

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+import { castArray as ensureArray } from "lodash-unified";
+
+//#region ../../packages/utils/arrays.d.ts
+declare const unique: <T>(arr: T[]) => T[];
+declare const extractFirst: <T>(arr: T | T[]) => T;
+type Many<T> = T | ReadonlyArray<T>;
+/** like `_.castArray`, except falsy value returns empty array. */
+declare const castArray: <T>(arr: Many<T>) => T[];
+//#endregion
+export { castArray, ensureArray, extractFirst, unique };