Access Control: Clear user's permission cache after resource creation (#59101)

* refresh user's permission cache after resource creation

* clear the cache instead of reloading the permissions

* don't error if can't clear cache

* fix tests

* fix tests again

pkg/api/team.go

@@ -41,6 +41,12 @@ func (hs *HTTPServer) CreateTeam(c *models.ReqContext) response.Response {
 		return response.Error(500, "Failed to create Team", err)
 	}
 
+	// Clear permission cache for the user who's created the team, so that new permissions are fetched for their next call
+	// Required for cases when caller wants to immediately interact with the newly created object
+	if !hs.AccessControl.IsDisabled() {
+		hs.accesscontrolService.ClearUserPermissionCache(c.SignedInUser)
+	}
+
 	if accessControlEnabled || (c.OrgRole == org.RoleEditor && hs.Cfg.EditorsCanAdmin) {
 		// if the request is authenticated using API tokens
 		// the SignedInUser is an empty struct therefore