[MM-51330] - Sentry Crash: nil pointer dereference in getSelfHostedProducts (#22569)

* [MM-51330] - Sentry Crash: nil pointer dereference in getSelfHostedProducts

* feedback impl

* fix bool

* remove double check

* fix failing tests

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/api4/hosted_customer.go

@@ -39,9 +39,8 @@ func (api *API) InitHostedCustomer() {
 }
 
 func ensureSelfHostedAdmin(c *Context, where string) {
-	cloud := c.App.Cloud()
-	if cloud == nil {
-		c.Err = model.NewAppError(where, "api.server.cws.needs_enterprise_edition", nil, "", http.StatusBadRequest)
+	ensured := ensureCloudInterface(c, where)
+	if !ensured {
 		return
 	}