changed the API response to empty in case user does not exist.

Author: irfan-ikhwa

server/api-service/lowcoder-domain/src/main/java/org/lowcoder/domain/user/service/UserServiceImpl.java

@@ -282,7 +282,7 @@ public Mono<Boolean> lostPassword(String userEmail) {
                     String token = generateNewRandomPwd();
                     Instant tokenExpiry = Instant.now().plus(12, ChronoUnit.HOURS);
                     if (!emailCommunicationService.sendPasswordResetEmail(userEmail, token, emailTemplate)) {
-                        return ofError(BizError.AUTH_ERROR, "SENDING_EMAIL_FAILED");
+                        return Mono.empty();
                     }
                     user.setPasswordResetToken(HashUtils.hash(token.getBytes()));
                     user.setPasswordResetTokenExpiry(tokenExpiry);

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/usermanagement/UserController.java

@@ -149,7 +149,7 @@ public Mono<ResponseView<String>> resetPassword(@RequestBody ResetPasswordReques
     @Override
     public Mono<ResponseView<Boolean>> lostPassword(@RequestBody LostPasswordRequest request) {
         if (StringUtils.isBlank(request.userEmail())) {
-            return ofError(BizError.INVALID_PARAMETER, "INVALID_PARAMETER");
+            return Mono.empty();
         }
         return userApiService.lostPassword(request.userEmail())
                 .map(ResponseView::success);