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/standard-validation.js

@@ -0,0 +1,25 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StandardValidation = void 0;
+const utils_1 = require("../utils");
+class StandardValidation {
+    constructor(validator, negated, options = [], 
+    // For testing only.
+    // Deliberately not calling it `toString` in order to not override `Object.prototype.toString`.
+    stringify = utils_1.toString) {
+        this.validator = validator;
+        this.negated = negated;
+        this.options = options;
+        this.stringify = stringify;
+    }
+    async run(context, value, meta) {
+        const values = Array.isArray(value) ? value : [value];
+        values.forEach(value => {
+            const result = this.validator(this.stringify(value), ...this.options);
+            if (this.negated ? result : !result) {
+                context.addError({ type: 'field', message: this.message, value, meta });
+            }
+        });
+    }
+}
+exports.StandardValidation = StandardValidation;