Fix MVC OAuth2AuthorizationRequestResolver to use correct "login" action for redirect URI

- Changed DefaultOAuth2AuthorizationRequestResolver.resolve(HttpServletRequest, String) to always use "login" as the redirect URI action instead of "authorize".
- This aligns URI generation with Reactive stack behavior, fixing inconsistent OAuth2 login redirect URIs between MVC and Reactive.
- Resolves authentication errors and token relay issues caused by incorrect URI paths.

Signed-off-by: chanbinme <[email protected]>

Author: chanbinme

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/DefaultOAuth2AuthorizationRequestResolver.java

@@ -132,7 +132,7 @@ public OAuth2AuthorizationRequest resolve(HttpServletRequest request, String reg
 		if (registrationId == null) {
 			return null;
 		}
-		String redirectUriAction = getAction(request, "authorize");
+		String redirectUriAction = getAction(request, "login");
 		return resolve(request, registrationId, redirectUriAction);
 	}
 

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/web/DefaultOAuth2AuthorizationRequestResolverTests.java

@@ -307,7 +307,7 @@ public void resolveWhenClientAuthorizationRequiredExceptionAvailableThenRedirect
 		assertThat(authorizationRequest.getAuthorizationRequestUri())
 			.matches("https://example.com/login/oauth/authorize\\?" + "response_type=code&client_id=client-id&"
 					+ "scope=read:user&state=.{15,}&"
-					+ "redirect_uri=http://localhost/authorize/oauth2/code/registration-id");
+					+ "redirect_uri=http://localhost/login/oauth2/code/registration-id");
 	}
 
 	@Test