[VMware vSphere]: Date parsing error for login events when missing AM/PM

### Integration Name

VMware vSphere [vsphere]

### Dataset Name

vsphere.log

### Integration Version

1.18.2

### Agent Version

8.18

### OS Version and Architecture

Ubuntu 20.04 LTS

### User Goal

**Issue:** Data processor is failing when we get the date as `Wednesday, 16 April, 2025 11:10:33` in the VMware logs.

**Parent Ingest Pipeline:** logs-vsphere.log-1.18.2

**Child Ingest Pipeline:** logs-vsphere.log-1.18.2-login

**Processor**: `date`
```
{
"date": {
"formats": [
"EEEE, dd MMMM, yyyy hh:mm:ss a" ],
"field": "event.start",
"target_field": "event.start",
"if": "ctx.event?.start != null"
}
}
```

**Event Original** : `Wednesday, 16 April, 2025 11:10:33` (Only Date timestamp field is providing)

**Error Message:**: `error.message Text 'Wednesday, 16 April, 2025 11:10:33' could not be parsed at index 34
`
**Root cause analysis:** The Current processor is expecting the date with am/pm. Due to this it is failing when we get date without am/pm in the logs.

### Existing Features

The Current `date` processor in `logs-vsphere.log-1.18.2-login` is expecting the date with am/pm. Due to this it is failing when we get date without am/pm in the logs.

### What did you see?

Sample log:
`2025-04-24T09:29:25.236Z INFO websso[74:tomcat-http--36] [CorId=6ae8edc4-79bb-4d1a-9230-4b51ffbe772a] [auditlogger] {\"user\":\"pc780088@cpd.adidom.com\",\"client\":\"10.15.96.14\",\"timestamp\":\"04/24/2025 09:29:25 GMT\",\"description\":\"User pc780088@cpd.adidom.com@10.15.96.14 logged in with response code 200\",\"eventSeverity\":\"INFO\",\"type\":\"com.vmware.sso.LoginSuccess\"}
`

The data parsing error is the one inside the message, not the syslog header:
"timestamp\":\"04/24/2025 09:29:25 GMT\

### Anything else?

_No response_