category_factory: Add BOOL data type's SET & CHANGE fallback values

To generate set and change blocks of node's property in boolean type
automatically, add property in boolean type's set and change fallback
value.

https://phabricator.endlessm.com/T35609

Author: starnight

addons/block_code/ui/picker/categories/category_factory.gd

@@ -566,13 +566,15 @@ static func property_to_blocklist(property: Dictionary) -> Array[Block]:
 	var variant_type = property.type
 
 	const FALLBACK_SET_FOR_TYPE = {
+		TYPE_BOOL: false,
 		TYPE_INT: "0",
 		TYPE_FLOAT: "0",
 		TYPE_VECTOR2: "0,0",
 		TYPE_COLOR: "DARK_ORANGE",
 	}
 
 	const FALLBACK_CHANGE_FOR_TYPE = {
+		TYPE_BOOL: true,
 		TYPE_INT: "1",
 		TYPE_FLOAT: "1",
 		TYPE_VECTOR2: "1,1",