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/util-defaults-mode-node/dist-es/defaultsModeConfig.js

@@ -0,0 +1,11 @@
+const AWS_DEFAULTS_MODE_ENV = "AWS_DEFAULTS_MODE";
+const AWS_DEFAULTS_MODE_CONFIG = "defaults_mode";
+export const NODE_DEFAULTS_MODE_CONFIG_OPTIONS = {
+    environmentVariableSelector: (env) => {
+        return env[AWS_DEFAULTS_MODE_ENV];
+    },
+    configFileSelector: (profile) => {
+        return profile[AWS_DEFAULTS_MODE_CONFIG];
+    },
+    default: "legacy",
+};