fix: add off for process.stdin keypress (#2156)

Author: YunYouJun

packages/slidev/node/cli.ts

@@ -281,7 +281,7 @@ cli.command(
       if (process.stdin.isTTY)
         process.stdin.setRawMode(true)
 
-      process.stdin.on('keypress', (str, key) => {
+      const onKeyPress = (str: string, key: { ctrl: boolean, name: string }) => {
         if (key.ctrl && key.name === 'c') {
           process.exit()
         }
@@ -296,6 +296,11 @@ cli.command(
             }
           }
         }
+      }
+
+      process.stdin.on('keypress', onKeyPress)
+      server?.httpServer?.on('close', () => {
+        process.stdin.off('keypress', onKeyPress)
       })
     }