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/hash-stream-node/dist-es/fileStreamHasher.js

@@ -0,0 +1,24 @@
+import { createReadStream } from "fs";
+import { HashCalculator } from "./HashCalculator";
+export const fileStreamHasher = (hashCtor, fileStream) => new Promise((resolve, reject) => {
+    if (!isReadStream(fileStream)) {
+        reject(new Error("Unable to calculate hash for non-file streams."));
+        return;
+    }
+    const fileStreamTee = createReadStream(fileStream.path, {
+        start: fileStream.start,
+        end: fileStream.end,
+    });
+    const hash = new hashCtor();
+    const hashCalculator = new HashCalculator(hash);
+    fileStreamTee.pipe(hashCalculator);
+    fileStreamTee.on("error", (err) => {
+        hashCalculator.end();
+        reject(err);
+    });
+    hashCalculator.on("error", reject);
+    hashCalculator.on("finish", function () {
+        hash.digest().then(resolve).catch(reject);
+    });
+});
+const isReadStream = (stream) => typeof stream.path === "string";