Cleanup usage of global logger (#26835)

server/channels/api4/post.go

@@ -1005,7 +1005,7 @@ func setPostReminder(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	appErr := c.App.SetPostReminder(c.Params.PostId, c.Params.UserId, reminder.TargetTime)
+	appErr := c.App.SetPostReminder(c.AppContext, c.Params.PostId, c.Params.UserId, reminder.TargetTime)
 	if appErr != nil {
 		c.Err = appErr
 		return