Unable to specify custom Jackson object mapper when using @McpTool

Bug description
When using the @McpTool annotation, it is currently not possible via the Spring AI public API to use any Jackson configuration other than McpJsonMapper.createDefault(). This behavior is hardcoded in SyncMcpToolProvider (and other subclasses of AbstractMcpToolProvider). While AbstractMcpToolProvider does provide a method setJsonMapper, these providers are not spring beans and cannot be configured as such. To the best of my knowledge I cannot get a reference to a tool provider during the autoconfiguration process to call that setter.

Environment
Spring AI 1.1.0-M2
OpenJDK 21

Steps to reproduce
Configure a non-standard jackson object mapper for spring MVC:

@Configuration
public class JsonConfig {

    @Bean
    public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
         // configure properties here...
    }

}

Expected behavior
Spring AI should use the same jackson object mapper as spring MVC. Creating multiple instances of ObjectMapper is possible, but discouraged by the jackson team.

Start by reading SyncMcpToolProvider and AbstractMcpToolProvider, then trace the @McpTool autoconfiguration path to determine where the provider receives its JSON mapper. Done means a configured Spring MVC ObjectMapper can be used through the public API instead of always using McpJsonMapper.createDefault().