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-sdk/xml-builder/dist-es/xml-parser.browser.js

@@ -0,0 +1,57 @@
+let parser;
+export function parseXML(xmlString) {
+    if (!parser) {
+        parser = new DOMParser();
+    }
+    const xmlDocument = parser.parseFromString(xmlString, "application/xml");
+    if (xmlDocument.getElementsByTagName("parsererror").length > 0) {
+        throw new Error("DOMParser XML parsing error.");
+    }
+    const xmlToObj = (node) => {
+        if (node.nodeType === Node.TEXT_NODE) {
+            if (node.textContent?.trim()) {
+                return node.textContent;
+            }
+        }
+        if (node.nodeType === Node.ELEMENT_NODE) {
+            const element = node;
+            if (element.attributes.length === 0 && element.childNodes.length === 0) {
+                return "";
+            }
+            const obj = {};
+            const attributes = Array.from(element.attributes);
+            for (const attr of attributes) {
+                obj[`${attr.name}`] = attr.value;
+            }
+            const childNodes = Array.from(element.childNodes);
+            for (const child of childNodes) {
+                const childResult = xmlToObj(child);
+                if (childResult != null) {
+                    const childName = child.nodeName;
+                    if (childNodes.length === 1 && attributes.length === 0 && childName === "#text") {
+                        return childResult;
+                    }
+                    if (obj[childName]) {
+                        if (Array.isArray(obj[childName])) {
+                            obj[childName].push(childResult);
+                        }
+                        else {
+                            obj[childName] = [obj[childName], childResult];
+                        }
+                    }
+                    else {
+                        obj[childName] = childResult;
+                    }
+                }
+                else if (childNodes.length === 1 && attributes.length === 0) {
+                    return element.textContent;
+                }
+            }
+            return obj;
+        }
+        return null;
+    };
+    return {
+        [xmlDocument.documentElement.nodeName]: xmlToObj(xmlDocument.documentElement),
+    };
+}