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/compress-commons/lib/util/index.js

@@ -0,0 +1,27 @@
+/**
+ * node-compress-commons
+ *
+ * Copyright (c) 2014 Chris Talkington, contributors.
+ * Licensed under the MIT license.
+ * https://github.com/archiverjs/node-compress-commons/blob/master/LICENSE-MIT
+ */
+var Stream = require('stream').Stream;
+var PassThrough = require('readable-stream').PassThrough;
+var isStream = require('is-stream');
+
+var util = module.exports = {};
+
+util.normalizeInputSource = function(source) {
+  if (source === null) {
+    return Buffer.alloc(0);
+  } else if (typeof source === 'string') {
+    return Buffer.from(source);
+  } else if (isStream(source) && !source._readableState) {
+    var normalized = new PassThrough();
+    source.pipe(normalized);
+
+    return normalized;
+  }
+
+  return source;
+};