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-stream/dist-cjs/headStream.browser.js

@@ -0,0 +1,34 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.headStream = headStream;
+async function headStream(stream, bytes) {
+    let byteLengthCounter = 0;
+    const chunks = [];
+    const reader = stream.getReader();
+    let isDone = false;
+    while (!isDone) {
+        const { done, value } = await reader.read();
+        if (value) {
+            chunks.push(value);
+            byteLengthCounter += value?.byteLength ?? 0;
+        }
+        if (byteLengthCounter >= bytes) {
+            break;
+        }
+        isDone = done;
+    }
+    reader.releaseLock();
+    const collected = new Uint8Array(Math.min(bytes, byteLengthCounter));
+    let offset = 0;
+    for (const chunk of chunks) {
+        if (chunk.byteLength > collected.byteLength - offset) {
+            collected.set(chunk.subarray(0, collected.byteLength - offset), offset);
+            break;
+        }
+        else {
+            collected.set(chunk, offset);
+        }
+        offset += chunk.length;
+    }
+    return collected;
+}