fix(bukkit): use the command name rather than the label

The label may contain the namespace prefix. This reverts a change introduced in #461.

(cherry picked from commit ad6b8d0)

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommand.java

@@ -108,7 +108,7 @@ public boolean execute(
  final @NonNull String @NonNull [] strings
  ) {
  /* Join input */
- final StringBuilder builder = new StringBuilder(commandLabel);
+ final StringBuilder builder = new StringBuilder(this.command.name());
  for (final String string : strings) {
  builder.append(" ").append(string);
  }