[receiver/datadogreceiver] Remove deprecated use of host.ReportFatalError

[atoulme]

Component(s)

receiver/datadog

Describe the issue you're reporting

Refactor to remove use of host.ReportFatalError, you can use settings.TelemetrySettings.ReportStatus(component.NewFatalErrorEvent(err)) instead.

See #30505 for an example.

[github-actions]

Pinging code owners:

• receiver/datadog: @boostchicken @gouthamve @jpkrohling @MovieStoreGuy

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[boostchicken]

I can tackle this in like 3 or 4 days. finishing some work for a client. If it neds toi move faster let me know and ill ask if my client can push on his dates they maybe soft

[atoulme]

This is not considered urgent, and should be a few lines of change. I have assigned the issue to you for now, feel free to take it up when you can. Thanks!

[atoulme]

This is fixed with #31146