数据源为List时，调用add方法程序闪退

[wxw-9527]

如题，数据源为List类型时，直接调用add方法添加新数据，程序报异常
FATAL EXCEPTION: main
Process: com.chad.baserecyclerviewadapterhelper, PID: 6013
java.lang.UnsupportedOperationException
at java.util.AbstractList.remove(AbstractList.java:161)
at com.chad.library.adapter4.BaseQuickAdapter.removeAt(BaseQuickAdapter.kt:634)
at com.chad.baserecyclerviewadapterhelper.activity.itemclick.ItemClickActivity.onCreate$lambda$6(ItemClickActivity.kt:69)
at com.chad.baserecyclerviewadapterhelper.activity.itemclick.ItemClickActivity.$r8$lambda$N5IZmXMy-dmWH7oJn-Jo3dOV9ho(Unknown Source:0)
at com.chad.baserecyclerviewadapterhelper.activity.itemclick.ItemClickActivity$$ExternalSyntheticLambda6.onItemClick(Unknown Source:0)
at com.chad.library.adapter4.BaseQuickAdapter.onItemChildClick(BaseQuickAdapter.kt:394)
at com.chad.library.adapter4.BaseQuickAdapter.bindViewClickListener$lambda$10$lambda$9$lambda$8(BaseQuickAdapter.kt:346)
at com.chad.library.adapter4.BaseQuickAdapter.$r8$lambda$ccaijNo-c5lRG10m3T_rMqaIOnE(Unknown Source:0)
at com.chad.library.adapter4.BaseQuickAdapter$$ExternalSyntheticLambda2.onClick(Unknown Source:4)
at android.view.View.performClick(View.java:7380)
at android.view.View.performClickInternal(View.java:7342)
at android.view.View.access$3900(View.java:824)
at android.view.View$PerformClick.run(View.java:28262)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:238)
at android.app.ActivityThread.main(ActivityThread.java:7827)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)

复现方法：
ItemClickActivity中，将数据源改为以下代码：

// 创建数据
        val data = listOf(
                    ClickEntity(ClickEntity.CLICK_ITEM_VIEW),
                    ClickEntity(ClickEntity.CLICK_ITEM_CHILD_VIEW),
                    ClickEntity(ClickEntity.LONG_CLICK_ITEM_VIEW),
                    ClickEntity(ClickEntity.LONG_CLICK_ITEM_CHILD_VIEW),
        )
        // 创建Adapter
        ItemClickAdapter(data)

调用add方法添加数据可复现

[limuyang2]

listOf 创建的是 java.util.Collections.singletonList(element)

SingletonList<> 根据官方注释如下：

Returns an immutable list containing only the specified object.
The returned list is serializable.

这是一个不可变化的列表，所以操作的时候，会抛出 UnsupportedOperationException 异常。

如果你已经确定了列表数据的不可变化特性，那么用 listOf 没有问题，操作数据抛出异常是对开发者的一种强制警告，符合设计逻辑。

如果你的列表数据是可以变化的，你应该使用 arrayListOf。

开发者应自己确定数据列表是否可变，并显示的使用不同 list 类型