Update recommendations for installing Console Arcs

Currently we have this on the console arcs install page in the installer:


Given this, it would make sense to also have a warning on the Chapter 4 install page telling you to make a backup.

Also, the instructions that you could install to a copy of the game folder might interfere with steam's cloud sync (I'm guessing it would prevent it from working?), so perhaps that recommendation is not the best without added instructions.

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Perhaps the simpler/safest way is to just tell the user to fully delete chapter 4, then re-install the unmodded game. The installer can check whether the game is already modded and show a warning if that is the case. Using this method, we also dont' need to have a preemptive warning on Chapter 4.

Also see https://github.com/07th-mod/python-patcher/issues/129

查看安裝程式程式碼中的控制台弧線安裝頁面，可能在文件或 UI 檔案中。檢查第 4 章安裝頁面是否有類似的警告。需要檢查安裝程式偵測修改版遊戲的邏輯，可能在修補程式腳本中。查看關聯的 issue #129 以了解上下文。變更涉及更新文字和新增檢查。

由索引模型根據 Issue 內容生成。