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/@aws-crypto/sha256-js/build/main/RawSha256.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @internal
+ */
+export declare class RawSha256 {
+    private state;
+    private temp;
+    private buffer;
+    private bufferLength;
+    private bytesHashed;
+    /**
+     * @internal
+     */
+    finished: boolean;
+    update(data: Uint8Array): void;
+    digest(): Uint8Array;
+    private hashBuffer;
+}