refactor: deprecate remaining HttpServletSseServerTransportProvider constructor

Complete constructor deprecation from commit 1840f63 addressing potential oversight during initial refactoring

Related to: 1840f63, PR #430

Author: ParanoidUser

mcp/src/main/java/io/modelcontextprotocol/server/transport/HttpServletSseServerTransportProvider.java

@@ -118,6 +118,20 @@ public class HttpServletSseServerTransportProvider extends HttpServlet implement
 	 */
 	private KeepAliveScheduler keepAliveScheduler;
 
+	/**
+	 * Creates a new HttpServletSseServerTransportProvider instance with the default SSE
+	 * endpoint.
+	 * @param objectMapper The JSON object mapper to use for message
+	 * serialization/deserialization
+	 * @param messageEndpoint The endpoint path where clients will send their messages
+	 * @deprecated Use the builder {@link #builder()} instead for better configuration
+	 * options.
+	 */
+	@Deprecated
+	public HttpServletSseServerTransportProvider(ObjectMapper objectMapper, String messageEndpoint) {
+		this(objectMapper, messageEndpoint, DEFAULT_SSE_ENDPOINT);
+	}
+
 	/**
 	 * Creates a new HttpServletSseServerTransportProvider instance with a custom SSE
 	 * endpoint.
@@ -217,17 +231,6 @@ public List<String> protocolVersions() {
 		return List.of(ProtocolVersions.MCP_2024_11_05);
 	}
 
-	/**
-	 * Creates a new HttpServletSseServerTransportProvider instance with the default SSE
-	 * endpoint.
-	 * @param objectMapper The JSON object mapper to use for message
-	 * serialization/deserialization
-	 * @param messageEndpoint The endpoint path where clients will send their messages
-	 */
-	public HttpServletSseServerTransportProvider(ObjectMapper objectMapper, String messageEndpoint) {
-		this(objectMapper, messageEndpoint, DEFAULT_SSE_ENDPOINT);
-	}
-
 	/**
 	 * Sets the session factory for creating new sessions.
 	 * @param sessionFactory The session factory to use