StructuredOutputCallToolHandler doesn't handle error based CallToolResult

[jc-hcl]

java-sdk/mcp/src/main/java/io/modelcontextprotocol/server/McpAsyncServer.java

Lines 377 to 379 in 681fe7f

	return this.delegateCallToolResult.apply(exchange, request).map(result -> {
	if (outputSchema == null) {

The method is checking for various combinations of content compared to the declared output schema, but if the result is an error then this should be just returned irrespective of the schema and structuredContent values i.e.

if (Boolean.TRUE.equals(result.isError())) {
    return result;
}