Alerting: Fix rule state history with annotations backend (#101174)

* add alertUID to annotations API query parameter
* update state history UI to fetch rule by UID

---------

Signed-off-by: Yuri Tseretyan <yuriy.tseretyan@grafana.com>

pkg/services/annotations/models.go

@@ -11,6 +11,7 @@ type ItemQuery struct {
 	To           int64    `json:"to"`
 	UserID       int64    `json:"userId"`
 	AlertID      int64    `json:"alertId"`
+	AlertUID     string   `json:"alertUID"`
 	DashboardID  int64    `json:"dashboardId"`
 	DashboardUID string   `json:"dashboardUID"`
 	PanelID      int64    `json:"panelId"`