refactor(oms): 优化 AppDeployCustom 组件默认值和样式

- 为 form 属性设置默认值，避免 undefined
- 优化输入框和标签的样式
- 调整部分 UI 样式，如换行和间距

project/oms/apps/develop/AppDeployCustom/config/webConfig.vue

@@ -6,7 +6,7 @@ export default {
     event: "input"
   },
   props: {
-    form: Object,
+    form: { default: () => ({ sysInfo: {} }) },
     title: String
   },
   watch: {
@@ -56,7 +56,8 @@ export default {
                 <template #prepend>左上角副标题</template>
               </el-input>
             </el-row>
-            <el-input class="mar-t10" type="textarea" rows="5" v-model="form.sysInfo.desc" placeholder="副标题" clearable/>
+            <el-input class="mar-t10" type="textarea" rows="5" v-model="form.sysInfo.desc" placeholder="副标题"
+              clearable />
           </el-form-item>
           <el-row type="flex">
             <div class="fill">
@@ -101,7 +102,7 @@ export default {
       <el-form-item label="默认首页">
         <el-input v-model="form.homePage" clearable placeholder="填写应用的文件名" />
       </el-form-item>
-      <el-form-item label="指定登录页">
+      <el-form-item label="登录页">
         <el-input v-model="form.signPage" clearable placeholder="填写应用的文件名" />
       </el-form-item>
       <el-form-item label="开启百度流量">