feat: Close camera after recognizing QR code

After recognizing a QR code, the camera is now closed to improve the user experience. If the QR code is a test code for Pushy, the camera is closed and no further scanning is performed. For other business logic, the scanning process continues.

Co-authored-by: dependabot[bot] <[email protected]>

site/pages/docs/api.mdx

@@ -323,10 +323,11 @@ interface PushyContext {
 ```js
 <Camera
   onReadCode={({ nativeEvent: { codeStringValue } }) => {
+    // 识别到二维码后先关闭相机
+    setShowCamera(false);
     // 先解析是否是pushy的测试二维码
     if (parseTestQrCode(codeStringValue)) {
-      // 如果是pushy的测试二维码，则不再继续扫描
-      setShowCamera(false);
+      // 如果是pushy的测试二维码，则不再做其他业务扫码逻辑
       return;
     }
     // 如果不是，继续处理其他业务扫码逻辑