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/express-validator/lib/context-items/custom-condition.js

@@ -0,0 +1,24 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CustomCondition = void 0;
+const base_1 = require("../base");
+class CustomCondition {
+    constructor(condition) {
+        this.condition = condition;
+    }
+    async run(_context, value, meta) {
+        try {
+            const result = this.condition(value, meta);
+            await result;
+            // if the promise resolved or the result is truthy somehow, then there's no validation halt.
+            if (!result) {
+                // the error thrown here is symbolic, it will be re-thrown in the catch clause anyway.
+                throw new Error();
+            }
+        }
+        catch (e) {
+            throw new base_1.ValidationHalt();
+        }
+    }
+}
+exports.CustomCondition = CustomCondition;