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-crypto/crc32c/README.md

@@ -0,0 +1,16 @@
+# @aws-crypto/crc32c
+
+Pure JS implementation of CRC32-C https://en.wikipedia.org/wiki/Cyclic_redundancy_check
+
+## Usage
+
+```
+import { Crc32c } from '@aws-crypto/crc32c';
+
+const crc32Digest = (new Crc32c).update(buffer).digest()
+
+```
+
+## Test
+
+`npm test`