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/contains.js

@@ -0,0 +1,15 @@
+import assertString from './util/assertString';
+import toString from './util/toString';
+import merge from './util/merge';
+var defaultContainsOptions = {
+  ignoreCase: false,
+  minOccurrences: 1
+};
+export default function contains(str, elem, options) {
+  assertString(str);
+  options = merge(options, defaultContainsOptions);
+  if (options.ignoreCase) {
+    return str.toLowerCase().split(toString(elem).toLowerCase()).length > options.minOccurrences;
+  }
+  return str.split(toString(elem)).length > options.minOccurrences;
+}