chore: 适配移动端微调聊天框样式

- 禁用横轴移动
- 稍减小了移动端bot气泡宽度，避免mini按钮被遮挡

assets/custom.css

@@ -262,12 +262,15 @@ ol:not(.options), ul:not(.options) {
         max-height: calc(100vh - 140px - var(--line-sm)*1rem - 2*var(--block-label-margin) );
     }
     [data-testid = "bot"] {
-        max-width: 98% !important;
+        max-width: 95% !important;
     }
     #app_title h1{
         letter-spacing: -1px; font-size: 22px;
     }
 }
+#chuanhu_chatbot .wrap {
+    overflow-x: hidden;
+}
 /* 对话气泡 */
 .message {
     border-radius: var(--radius-xl) !important;