fix: 弹窗报错信息和主题模式的按钮存在显示问题

Closes #IC1KD8

Author: Charles7c

src/views/login/index.vue

@@ -283,7 +283,12 @@ const onOauth = async (source: string) => {
     position: fixed;
     top: 20px;
     right: 30px;
-    z-index: 9999;
+    z-index: 999;
+  }
+
+  // 新增弹窗层级设置
+  .arco-modal-wrapper {
+    z-index: 1000;
   }
 
   .footer {
@@ -489,7 +494,12 @@ const onOauth = async (source: string) => {
     position: fixed;
     top: 20px;
     right: 30px;
-    z-index: 9999;
+    z-index: 999;
+  }
+
+  // 新增弹窗层级设置
+  .arco-modal-wrapper {
+    z-index: 1000;
   }
 
   .footer {

src/views/login/pwdExpired/index.vue

@@ -178,7 +178,12 @@ const logo = computed(() => appStore.getLogo())
         position: fixed;
         top: 20px;
         right: 30px;
-        z-index: 9999;
+        z-index: 999;
+    }
+
+    // 新增弹窗层级设置
+    .arco-modal-wrapper {
+      z-index: 1000;
     }
 
     .footer {
@@ -385,7 +390,12 @@ const logo = computed(() => appStore.getLogo())
         position: fixed;
         top: 20px;
         right: 30px;
-        z-index: 9999;
+        z-index: 999;
+    }
+
+    // 新增弹窗层级设置
+    .arco-modal-wrapper {
+      z-index: 1000;
     }
 
     .footer {