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/bare-events/lib/errors.js

@@ -0,0 +1,26 @@
+module.exports = class EventEmitterError extends Error {
+  constructor(msg, code, fn = EventEmitterError, opts) {
+    super(`${code}: ${msg}`, opts)
+    this.code = code
+
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, fn)
+    }
+  }
+
+  get name() {
+    return 'EventEmitterError'
+  }
+
+  static OPERATION_ABORTED(cause, msg = 'Operation aborted') {
+    return new EventEmitterError(msg, 'OPERATION_ABORTED', EventEmitterError.OPERATION_ABORTED, {
+      cause
+    })
+  }
+
+  static UNHANDLED_ERROR(cause, msg = 'Unhandled error') {
+    return new EventEmitterError(msg, 'UNHANDLED_ERROR', EventEmitterError.UNHANDLED_ERROR, {
+      cause
+    })
+  }
+}