Try to determine plugin name on bad plugin command registration

Spigot-API-Patches/Timings-v2.patch

@@ -2085,13 +2085,15 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    public static Timing getCommandTiming(String pluginName, Command command) {
 +        Plugin plugin = null;
 +        final Server server = Bukkit.getServer();
-+        if (!("minecraft".equals(pluginName) || "bukkit".equals(pluginName) || "Spigot".equals(pluginName) ||
-+            server == null)) {
++        if (!(  server == null || pluginName == null ||
++                "minecraft".equals(pluginName) || "bukkit".equals(pluginName) ||
++                "spigot".equalsIgnoreCase(pluginName) || "paper".equals(pluginName)
++        )) {
 +            plugin = server.getPluginManager().getPlugin(pluginName);
-+            if (plugin == null) {
-+                // Plugin is passing custom fallback prefix, try to look up by class loader
-+                plugin = getPluginByClassloader(command.getClass());
-+            }
++        }
++        if (plugin == null) {
++            // Plugin is passing custom fallback prefix, try to look up by class loader
++            plugin = getPluginByClassloader(command.getClass());
 +        }
 +        if (plugin == null) {
 +            return Timings.ofSafe("Command: " + pluginName + ":" + command.getTimingName());
@@ -2906,7 +2908,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
              this.commandMap = commandMap;
 +            // Paper start - Some plugins do things the wrong way, try and account for that
 +            if (this.timings == null) {
-+                this.timings = co.aikar.timings.TimingsManager.getCommandTiming("unknown", this);
++                this.timings = co.aikar.timings.TimingsManager.getCommandTiming(null, this);
 +            }
 +            // Paper end
              return true;