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/eventstream-serde-browser/dist-es/EventStreamMarshaller.js

@@ -0,0 +1,20 @@
+import { EventStreamMarshaller as UniversalEventStreamMarshaller } from "@smithy/eventstream-serde-universal";
+import { iterableToReadableStream, readableStreamtoIterable } from "./utils";
+export class EventStreamMarshaller {
+    universalMarshaller;
+    constructor({ utf8Encoder, utf8Decoder }) {
+        this.universalMarshaller = new UniversalEventStreamMarshaller({
+            utf8Decoder,
+            utf8Encoder,
+        });
+    }
+    deserialize(body, deserializer) {
+        const bodyIterable = isReadableStream(body) ? readableStreamtoIterable(body) : body;
+        return this.universalMarshaller.deserialize(bodyIterable, deserializer);
+    }
+    serialize(input, serializer) {
+        const serialziedIterable = this.universalMarshaller.serialize(input, serializer);
+        return typeof ReadableStream === "function" ? iterableToReadableStream(serialziedIterable) : serialziedIterable;
+    }
+}
+const isReadableStream = (body) => typeof ReadableStream === "function" && body instanceof ReadableStream;