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/@aws-sdk/middleware-flexible-checksums/dist-es/isChecksumWithPartNumber.js

@@ -0,0 +1,13 @@
+export const isChecksumWithPartNumber = (checksum) => {
+    const lastHyphenIndex = checksum.lastIndexOf("-");
+    if (lastHyphenIndex !== -1) {
+        const numberPart = checksum.slice(lastHyphenIndex + 1);
+        if (!numberPart.startsWith("0")) {
+            const number = parseInt(numberPart, 10);
+            if (!isNaN(number) && number >= 1 && number <= 10000) {
+                return true;
+            }
+        }
+    }
+    return false;
+};