[Bug] Clearing Chat History and Issues with the Delete Button Display on Mobile

### 📦 Deployment Method

Vercel

### 📌 Version

last

### 💻 Operating System

Windows

### 📌 System Version

11

### 🌐 Browser

Chrome

### 📌 Browser Version

last

### 🐛 Bug Description

Is it possible to add a button to clear all chat history on the left? Over time, the chat history grows, and sometimes I want to delete it all at once. I saw an option related to clearing all data in the settings, but that resets everything. I just want to clear the chat history displayed on the left side. This is a basic delete feature that ChatGPT has, but "ChatGPTNextWeb" doesn’t.

Additionally, regarding mobile display, the individual delete button is so small that it's sometimes not noticeable or clickable because it's hidden. I understand this is a UI design issue, but for mobile display, if you try deleting on a mobile device yourself, you'll understand my frustration. Sometimes I try to tap the top right corner to delete, but my finger is too big for the delete icon, causing me to accidentally open the chat box instead (this issue is specific to mobile devices). If possible, for mobile display only, it should be easier to delete by making the icon larger and always visible, or allowing users to swipe left to delete easily

### 📷 Recurrence Steps

_No response_

### 🚦 Expected Behavior

_No response_

### 📝 Additional Information

_No response_