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-es/getAwsChunkedEncodingStream.browser.js

@@ -0,0 +1,27 @@
+export const getAwsChunkedEncodingStream = (readableStream, options) => {
+    const { base64Encoder, bodyLengthChecker, checksumAlgorithmFn, checksumLocationName, streamHasher } = options;
+    const checksumRequired = base64Encoder !== undefined &&
+        bodyLengthChecker !== undefined &&
+        checksumAlgorithmFn !== undefined &&
+        checksumLocationName !== undefined &&
+        streamHasher !== undefined;
+    const digest = checksumRequired ? streamHasher(checksumAlgorithmFn, readableStream) : undefined;
+    const reader = readableStream.getReader();
+    return new ReadableStream({
+        async pull(controller) {
+            const { value, done } = await reader.read();
+            if (done) {
+                controller.enqueue(`0\r\n`);
+                if (checksumRequired) {
+                    const checksum = base64Encoder(await digest);
+                    controller.enqueue(`${checksumLocationName}:${checksum}\r\n`);
+                    controller.enqueue(`\r\n`);
+                }
+                controller.close();
+            }
+            else {
+                controller.enqueue(`${(bodyLengthChecker(value) || 0).toString(16)}\r\n${value}\r\n`);
+            }
+        },
+    });
+};