Register the azure-eventhub input on Windows (#40609)

Registers the `azure-eventhub` input on the Windows platform.

During the recent [upgrade](#39511)
of the input from the Filebeat input API v1 to input API v2, I missed
registering the input for the Windows platform in the
`x-pack/filebeat/input/default-inputs/inputs_windows.go` file.

(cherry picked from commit cc561ff)

CHANGELOG.next.asciidoc

@@ -111,6 +111,7 @@ https://github.com/elastic/beats/compare/v8.8.1\...main[Check the HEAD diff]
 - Fix order of configuration for EntraID entity analytics provider. {pull}40487[40487]
 - Ensure Entra ID request bodies are not truncated and trace logs are rotated before 100MB. {pull}40494[40494]
 - The Elasticsearch output now correctly logs the event fields to the event log file {issue}40509[40509] {pull}40512[40512]
+- Fix the "No such input type exist: 'azure-eventhub'" error on the Windows platform {issue}40608[40608] {pull}40609[40609]
 
 *Heartbeat*
 

x-pack/filebeat/input/default-inputs/inputs_windows.go

@@ -13,6 +13,7 @@ import (
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/awscloudwatch"
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/awss3"
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/azureblobstorage"
+	"github.com/elastic/beats/v7/x-pack/filebeat/input/azureeventhub"
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/cel"
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/cloudfoundry"
 	"github.com/elastic/beats/v7/x-pack/filebeat/input/entityanalytics"
@@ -29,6 +30,7 @@ import (
 func xpackInputs(info beat.Info, log *logp.Logger, store beater.StateStore) []v2.Plugin {
 	return []v2.Plugin{
 		azureblobstorage.Plugin(log, store),
+		azureeventhub.Plugin(log),
 		cel.Plugin(log, store),
 		cloudfoundry.Plugin(),
 		entityanalytics.Plugin(log),