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/github-from-package/package.json

@@ -0,0 +1,30 @@
+{
+    "name" : "github-from-package",
+    "version" : "0.0.0",
+    "description" : "return the github url from a package.json file",
+    "main" : "index.js",
+    "devDependencies" : {
+        "tap" : "~0.3.0",
+        "tape" : "~0.1.5"
+    },
+    "scripts" : {
+        "test" : "tap test/*.js"
+    },
+    "repository" : {
+        "type" : "git",
+        "url" : "git://github.com/substack/github-from-package.git"
+    },
+    "homepage" : "https://github.com/substack/github-from-package",
+    "keywords" : [
+        "github",
+        "package.json",
+        "npm",
+        "repository"
+    ],
+    "author" : {
+        "name" : "James Halliday",
+        "email" : "mail@substack.net",
+        "url" : "http://substack.net"
+    },
+    "license" : "MIT"
+}