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-buffer-from/dist-cjs/index.js

@@ -0,0 +1,20 @@
+'use strict';
+
+var isArrayBuffer = require('@smithy/is-array-buffer');
+var buffer = require('buffer');
+
+const fromArrayBuffer = (input, offset = 0, length = input.byteLength - offset) => {
+    if (!isArrayBuffer.isArrayBuffer(input)) {
+        throw new TypeError(`The "input" argument must be ArrayBuffer. Received type ${typeof input} (${input})`);
+    }
+    return buffer.Buffer.from(input, offset, length);
+};
+const fromString = (input, encoding) => {
+    if (typeof input !== "string") {
+        throw new TypeError(`The "input" argument must be of type string. Received type ${typeof input} (${input})`);
+    }
+    return encoding ? buffer.Buffer.from(input, encoding) : buffer.Buffer.from(input);
+};
+
+exports.fromArrayBuffer = fromArrayBuffer;
+exports.fromString = fromString;