fix:Increase default MCP client timeouts to 5 minutes

The default initialization and request timeouts for both sync and async MCP clients are increased from 10 seconds to 5 minutes.

PiperOrigin-RevId: 803471817

Author: google-genai-bot

core/src/main/java/com/google/adk/tools/mcp/McpSessionManager.java

@@ -72,8 +72,8 @@ public static McpSyncClient initializeSession(
     McpSyncClient client =
         McpClient.sync(transport)
             .initializationTimeout(
-                Optional.ofNullable(initializationTimeout).orElse(Duration.ofSeconds(10)))
-            .requestTimeout(Optional.ofNullable(requestTimeout).orElse(Duration.ofSeconds(10)))
+                Optional.ofNullable(initializationTimeout).orElse(Duration.ofMinutes(5)))
+            .requestTimeout(Optional.ofNullable(requestTimeout).orElse(Duration.ofMinutes(5)))
             .loggingConsumer(new McpServerLogConsumer())
             .capabilities(ClientCapabilities.builder().build())
             .build();
@@ -104,8 +104,8 @@ public static McpAsyncClient initializeAsyncSession(
     }
     return McpClient.async(transport)
         .initializationTimeout(
-            initializationTimeout == null ? Duration.ofSeconds(10) : initializationTimeout)
-        .requestTimeout(requestTimeout == null ? Duration.ofSeconds(10) : requestTimeout)
+            initializationTimeout == null ? Duration.ofMinutes(5) : initializationTimeout)
+        .requestTimeout(requestTimeout == null ? Duration.ofMinutes(5) : requestTimeout)
         .capabilities(ClientCapabilities.builder().build())
         .build();
   }