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/validator/es/lib/isHash.js

@@ -0,0 +1,21 @@
+import assertString from './util/assertString';
+var lengths = {
+  md5: 32,
+  md4: 32,
+  sha1: 40,
+  sha256: 64,
+  sha384: 96,
+  sha512: 128,
+  ripemd128: 32,
+  ripemd160: 40,
+  tiger128: 32,
+  tiger160: 40,
+  tiger192: 48,
+  crc32: 8,
+  crc32b: 8
+};
+export default function isHash(str, algorithm) {
+  assertString(str);
+  var hash = new RegExp("^[a-fA-F0-9]{".concat(lengths[algorithm], "}$"));
+  return hash.test(str);
+}