perf: merge plugin uninstallation options button (#779)

#### What type of PR is this?

/kind improvement

#### What this PR does / why we need it:

合并卸载插件的选项。

#### Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/2978

#### Screenshots:

before:

![image](https://user-images.githubusercontent.com/21301288/208060524-fa9de196-ccd2-43dc-82e7-21eefddec44b.png)


after:

<img width="466" alt="image" src="https://user-images.githubusercontent.com/21301288/208060456-77514178-1935-43f4-9d50-13bc606d5573.png">


#### Special notes for your reviewer:

测试方式：

1. 测试插件卸载的两种选项是否功能正常。

#### Does this PR introduce a user-facing change?

```release-note
优化 Console 端的插件卸载选项布局
```

src/modules/system/plugins/components/PluginListItem.vue

@@ -132,12 +132,31 @@ const onUpgradeModalClose = () => {
       >
         升级
       </VButton>
-      <VButton v-close-popper block type="danger" @click="uninstall">
+      <FloatingDropdown class="w-full" placement="left" :triggers="['click']">
+        <VButton block type="danger"> 卸载 </VButton>
+        <template #popper>
+          <div class="w-52 p-2">
+            <VSpace class="w-full" direction="column">
+              <VButton
+                v-close-popper.all
+                block
+                type="danger"
+                @click="uninstall"
+              >
                 卸载
               </VButton>
-      <VButton v-close-popper block type="danger" @click="uninstall(true)">
+              <VButton
+                v-close-popper.all
+                block
+                type="danger"
+                @click="uninstall(true)"
+              >
                 卸载并删除配置
               </VButton>
+            </VSpace>
+          </div>
+        </template>
+      </FloatingDropdown>
     </template>
   </VEntity>
 </template>

src/modules/system/plugins/composables/use-plugin.ts

@@ -55,7 +55,9 @@ export function usePluginLifeCycle(
           : "确定要卸载该插件吗？"
       }`,
       description: `${
-        enabled ? "当前插件还在启用状态，将在停止运行后卸载。" : ""
+        enabled
+          ? "当前插件还在启用状态，将在停止运行后卸载，该操作不可恢复。"
+          : "该操作不可恢复。"
       }`,
       confirmType: "danger",
       confirmText: `${enabled ? "停止运行并卸载" : "卸载"}`,