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/protocol-http/dist-es/Field.js

@@ -0,0 +1,26 @@
+import { FieldPosition } from "@smithy/types";
+export class Field {
+    name;
+    kind;
+    values;
+    constructor({ name, kind = FieldPosition.HEADER, values = [] }) {
+        this.name = name;
+        this.kind = kind;
+        this.values = values;
+    }
+    add(value) {
+        this.values.push(value);
+    }
+    set(values) {
+        this.values = values;
+    }
+    remove(value) {
+        this.values = this.values.filter((v) => v !== value);
+    }
+    toString() {
+        return this.values.map((v) => (v.includes(",") || v.includes(" ") ? `"${v}"` : v)).join(", ");
+    }
+    get() {
+        return this.values;
+    }
+}