Added progress bar when changing type on multiple nodes
Created by: pouleyKetchoupp
This change displays a progress bar while doing operations instead of freezing the editor
The progress bar also flushes the message queue, which fixes these errors in cases with lots of nodes:
ERROR: push_call: Message queue out of memory. Try increasing 'message_queue_size_kb' in project settings.
At: core/message_queue.cpp:56.
Fixes #23853