[Logstash]: logstash.node.stats.pipelines mappings conflict

### Integration Name

Logstash

### Dataset Name

logstash.node, logstash.stack_monitoring.node_stats

### Integration Version

2.5.0

### Agent Version

8.15

### Agent Output Type

elasticsearch

### Elasticsearch Version

8.15

### OS Version and Architecture

Windows

### Software/API Version

logstash 8.17

### Error Message

When transitioning from
Metrics (Stack Monitoring) to Metrics (Elastic Agent) a mapping conflict is created for the [logstash.node.stats.pipelines] field.

In the Metrics (Elastic Agent) it is mapped as a Nested Type

In the Metrics (Stack Monitoring) it is mapped as a Object Type


### Event Original

_No response_

### What did you do?

Transition from Metrics (Stack Monitoring) to Metrics (Elastic Agent)

### What did you see?

Creation of a mapping conflict, Query failures

### What did you expect to see?

Forward compatibility in data standards

### Anything else?

_No response_