Continuation of crashes from Issues 201/209.

[Agentpdx]

Getting an error in Godot 4.6 where de-selecting CyclopsBlock's in the scene tree or the editor window causes crashes galore, with the straw that broke the camel's back being "Can't take value from empty array.". Looked into the code of the script a bit, tried finding where the "Select blocks" print was coming from, and failed miserably. Wherever that selection process occurs, it seems that the plugin tries to gather whichever CyclopBlock(s) you have selected by reading a constructed array, and no having anything in that array (ie. selecting something that isn't a CyclopsBlock) causes the error.

If only I could figure out where the print is, I might be able to fork this plugin to fix it.