more cleanup and resource pack api fixes

patches/api/Add-PlayerKickEvent-causes.patch

@@ -52,6 +52,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        this.cause = Cause.UNKNOWN;
 +    }
 +
++    @org.jetbrains.annotations.ApiStatus.Internal
 +    public PlayerKickEvent(@NotNull final Player playerKicked, @NotNull final net.kyori.adventure.text.Component kickReason, @NotNull final net.kyori.adventure.text.Component leaveMessage, @NotNull final Cause cause) {
 +        super(playerKicked);
 +        this.kickReason = kickReason;