[fortinet_fortigate]: fortinet.firewall.packetloss should be a Numeric Type

### Integration Name

Fortinet FortiGate Firewall Logs [fortinet_fortigate]

### Dataset Name

fortinet_fortigate.log

### Integration Version

1.27.0

### Agent Version

8.16.1

### Agent Output Type

elasticsearch

### Elasticsearch Version

8.16.0

### OS Version and Architecture

Ubuntu 24.04.1 LTS

### Software/API Version

FortiOS 7.0.16

### Error Message

_No response_

### Event Original

_No response_

### What did you do?

Default Integration and receiving SDWAN logs from firewall

### What did you see?

The field in the index for fortinet.firewall.packetloss is set to keyword.

### What did you expect to see?

Changing fortinet.firewall.packetloss to a numeric type would allow for alerting to be written based on the packet loss being above or below a specific threshold. The value comes in as number with three values after the decimal i.e. 90.000

### Anything else?

_No response_