change OAuth2AuthorizationRequestException from private inner class to public

Author: leewin12

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/OAuth2AuthorizationRequestException.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2002-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.security.oauth2.client.web;
+
+import org.springframework.security.core.AuthenticationException;
+
+/**
+ * Thrown when the request fails to redirect to the Authorization Server's Authorization
+ * Endpoint.
+ *
+ * @since 6.3
+ */
+public class OAuth2AuthorizationRequestException extends AuthenticationException {
+
+	OAuth2AuthorizationRequestException(Throwable cause) {
+		super(cause.getMessage(), cause);
+	}
+
+}

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/OAuth2AuthorizationRequestRedirectFilter.java

@@ -269,12 +269,4 @@ protected void initExtractorMap() {
 
 	}
 
-	private static final class OAuth2AuthorizationRequestException extends AuthenticationException {
-
-		OAuth2AuthorizationRequestException(Throwable cause) {
-			super(cause.getMessage(), cause);
-		}
-
-	}
-
 }