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/isNumeric.js

@@ -0,0 +1,10 @@
+import assertString from './util/assertString';
+import { decimal } from './alpha';
+var numericNoSymbols = /^[0-9]+$/;
+export default function isNumeric(str, options) {
+  assertString(str);
+  if (options && options.no_symbols) {
+    return numericNoSymbols.test(str);
+  }
+  return new RegExp("^[+-]?([0-9]*[".concat((options || {}).locale ? decimal[options.locale] : '.', "])?[0-9]+$")).test(str);
+}