Don't undo zoom! (#7943)

Makes it so that editor zoom, automation tension, along with quantization, note length, and all other combo boxes are not added to the undo history.

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Co-authored-by: szeli1 <143485814+szeli1@users.noreply.github.com>

include/ComboBoxModel.h

@@ -45,6 +45,7 @@ public:
 					bool isDefaultConstructed = false ) :
 		IntModel( 0, 0, 0, parent, displayName, isDefaultConstructed )
 	{
+		setJournalling(false);
 	}
 
 	void addItem( QString item, std::unique_ptr<PixmapLoader> loader = nullptr );