Chore: Replace usages of golang.org/x/net/context with stdlib context package (#105676)

pkg/services/authz/rbac/store/store.go

@@ -1,10 +1,9 @@
 package store
 
 import (
+	"context"
 	"fmt"
 
-	"golang.org/x/net/context"
-
 	claims "github.com/grafana/authlib/types"
 
 	"github.com/grafana/grafana/pkg/infra/tracing"

pkg/services/ngalert/accesscontrol/accesscontrol.go

@@ -1,7 +1,7 @@
 package accesscontrol
 
 import (
-	"golang.org/x/net/context"
+	"context"
 
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/services/accesscontrol"

pkg/services/ngalert/accesscontrol/rules.go

@@ -1,11 +1,10 @@
 package accesscontrol
 
 import (
+	"context"
 	"fmt"
 	"slices"
 
-	"golang.org/x/net/context"
-
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/expr"
 	"github.com/grafana/grafana/pkg/services/accesscontrol"