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/@smithy/credential-provider-imds/dist-es/remoteProvider/ImdsCredentials.js

@@ -0,0 +1,13 @@
+export const isImdsCredentials = (arg) => Boolean(arg) &&
+    typeof arg === "object" &&
+    typeof arg.AccessKeyId === "string" &&
+    typeof arg.SecretAccessKey === "string" &&
+    typeof arg.Token === "string" &&
+    typeof arg.Expiration === "string";
+export const fromImdsCredentials = (creds) => ({
+    accessKeyId: creds.AccessKeyId,
+    secretAccessKey: creds.SecretAccessKey,
+    sessionToken: creds.Token,
+    expiration: new Date(creds.Expiration),
+    ...(creds.AccountId && { accountId: creds.AccountId }),
+});