[MCM-1494] NPC dialogue closes if there is a dialogue open command on a button.

Partner Rank: 2 can result in uncompletable maps and broken functionality

Partner Team Reporting: Jigarbov Productions

Verification builds: 1.18.10.28

Summary: NPC dialogue closes if there is a dialogue open command on a button.

Impact: Makes NPC dialogue unreliable and in some cases will lock players out of map functionality, specifically if there is an npc reset command on the deeper level of the dialogue tree.

Repro Steps:

Open attached repro world
open npc dialogue
press the button
press the button again

Observed Results: When the button is pressed, the dialogue window closes instead of opening the new dialogue window.

https://www.youtube.com/watch?v=Pky76A8agGA

Expected Results:
The button should open the new dialogue window.
https://www.youtube.com/watch?v=hbUxhe-yg1Q
Screenshots/Videos attached: above

Regression Builds: 1.17.40-1.18.0

Notes: Repro world attached