revert(azure): revert removal (#3890)

* Revert "fix(sidebar): show docker sidebar when needed (#3852)"

This reverts commit 59da17dde4.

* Revert "refactor(azure): remove Azure ACI endpoint support (#3803)"

This reverts commit 493de20540.

api/http/handler/endpoints/handler.go

@@ -12,6 +12,7 @@ import (
 )
 
 func hideFields(endpoint *portainer.Endpoint) {
+	endpoint.AzureCredentials = portainer.AzureCredentials{}
 	if len(endpoint.Snapshots) > 0 {
 		endpoint.Snapshots[0].SnapshotRaw = portainer.SnapshotRaw{}
 	}