refactor: 인증 코드 sms 전송 API, 이메일 찾기 API 수정(#28)

- 잘못된 어노테이션 순서 수정
- 이메일 찾기 API, 요청 검증 과정 추가

be/src/main/java/yeonba/be/login/controller/LoginController.java

@@ -45,7 +45,7 @@ public ResponseEntity<CustomResponse<UserJoinResponse>> join(
 	@ApiResponse(responseCode = "202", description = "전화번호 인증 코드 전송 성공")
 	@PostMapping("/users/help/email-inquiry/verification-code")
 	public ResponseEntity<CustomResponse<Void>> verifyPhoneNumber(
-		@RequestBody @Valid UserPhoneNumberVerifyRequest request) {
+		@Valid @RequestBody UserPhoneNumberVerifyRequest request) {
 
 		loginService.sendVerificationCodeMessage(request);
 
@@ -58,7 +58,7 @@ public ResponseEntity<CustomResponse<Void>> verifyPhoneNumber(
 	@ApiResponse(responseCode = "200", description = "아이디 찾기 정상 처리")
 	@PostMapping("/users/help/email-inquiry")
 	public ResponseEntity<CustomResponse<UserEmailInquiryResponse>> idInquiry(
-		@RequestBody UserEmailInquiryRequest request) {
+		@Valid @RequestBody UserEmailInquiryRequest request) {
 
 		UserEmailInquiryResponse response = loginService.findEmail(request);