fix: 修复配额说明重复和undefined问题

- 在editStorageForm中初始化oss_storage_quota_value和oss_quota_unit
- 删除重复的旧配额说明块，保留新的当前配额设置显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/@smithy/util-base64/dist-cjs/index.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var fromBase64 = require('./fromBase64');
+var toBase64 = require('./toBase64');
+
+
+
+Object.keys(fromBase64).forEach(function (k) {
+	if (k !== 'default' && !Object.prototype.hasOwnProperty.call(exports, k)) Object.defineProperty(exports, k, {
+		enumerable: true,
+		get: function () { return fromBase64[k]; }
+	});
+});
+Object.keys(toBase64).forEach(function (k) {
+	if (k !== 'default' && !Object.prototype.hasOwnProperty.call(exports, k)) Object.defineProperty(exports, k, {
+		enumerable: true,
+		get: function () { return toBase64[k]; }
+	});
+});