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/isTime.js

@@ -0,0 +1,22 @@
+import merge from './util/merge';
+var default_time_options = {
+  hourFormat: 'hour24',
+  mode: 'default'
+};
+var formats = {
+  hour24: {
+    "default": /^([01]?[0-9]|2[0-3]):([0-5][0-9])$/,
+    withSeconds: /^([01]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])$/,
+    withOptionalSeconds: /^([01]?[0-9]|2[0-3]):([0-5][0-9])(?::([0-5][0-9]))?$/
+  },
+  hour12: {
+    "default": /^(0?[1-9]|1[0-2]):([0-5][0-9]) (A|P)M$/,
+    withSeconds: /^(0?[1-9]|1[0-2]):([0-5][0-9]):([0-5][0-9]) (A|P)M$/,
+    withOptionalSeconds: /^(0?[1-9]|1[0-2]):([0-5][0-9])(?::([0-5][0-9]))? (A|P)M$/
+  }
+};
+export default function isTime(input, options) {
+  options = merge(options, default_time_options);
+  if (typeof input !== 'string') return false;
+  return formats[options.hourFormat][options.mode].test(input);
+}