[otel_collector_internal_telemetry]: Wrong collector instances are preselected.

### Integration Name

OpenTelemetry Collector Internal Telemetry [packages/otel_collector_internal_telemetry]

### Dataset Name

_No response_

### Integration Version

doesn't matter

### Agent Version

doesn't matter

### Agent Output Type

elasticsearch

### Elasticsearch Version

9.4

### OS Version and Architecture

doesn't matter

### Software/API Version

_No response_

### Error Message

_No response_

### Event Original

_No response_

### What did you do?

Go to any of the dashboards from the integration

### What did you see?

The dashboards have a preselected collector instance, which is incorrect:

E.g.: https://github.com/elastic/integrations/blob/main/packages/otel_collector_internal_telemetry/kibana/dashboard/otel_collector_internal_telemetry-4c979b50-19eb-411c-8cfd-6ffe37fb0092.json#L22

Those `selectedOptions` lines need to be removed.

Things to check:
- [ ] What will be then preselected and is that ok?
- [ ] Any option to be bale to select the 1. one - here we should keep in mind OpAMP mgmt. integration

### What did you expect to see?

Either an empty selection or a collector that does exist.

### Anything else?

_No response_